Removing the fork from a mountain bike

How to replace a fork on a bicycle?

It is not recommended for an untrained and inexperienced user to carry out: if it is possible to cope with simple care, then it is better to leave such a procedure to a qualified specialist. As a last resort, carry out the replacement under the supervision of the master, following his recommendations.

How to remove the plug

Let’s look at the step-by-step process of dismantling a bicycle fork:

First you need to unscrew all the parts that are attached to the plug. These elements can be brake calipers or disc brake lines.

V-brakes are also removable.
The bolts that fix the stem on the handlebar tube are unscrewed, after which it is necessary to unscrew the anchor bolt of the bicycle fork.
Then you need to carefully remove the steering wheel. You should be extremely careful not to damage the hose lines.
The next step is to remove the spacer rings and the guide sleeve

In order to perform this procedure, carefully pry the sleeve in the area of ​​the cut using a flat screwdriver. Further, the upper rolling ring and the upper bearing are detached.
The steering tube can now be removed. Then you need to get the bearing, rolling ring, and also detach the front wheel of the bicycle. To do this, unscrew the fixing bolts. The result is an unscrewed bicycle fork.

How to disassemble a shock absorber bike front fork

How to assemble a bike fork?

Assembling the plug
runs in the reverse order of the parsing process, and it is impractical to describe it additionally. The main thing is to carefully follow the order of the described procedures.

Internal organization

Having disassembled the front and rear shock absorbers, it is easy to determine the internal arrangement of the parts, including the springs and the damper. Thanks to the springs while cycling, shock loads are reduced to nothing, even if the terrain is uneven and the speed is off scale. Dampers, in turn, dampen vibrations, provide stability and stabilize the vehicle on the road.

Dampers are always found on mountain bikes and speed bikes designed for cycling. Such devices are necessary if travel includes passing a route with bumps and pits. For this reason, you will not see shock absorbers on road and road bikes. But if a cyclist wants to retrofit a two-wheeled bike, he can do-it-yourself front and rear forks.

Basic details

Conventionally, the front fork can be divided into four component blocks:

  • shock absorber. the part that takes on the main load to absorb the irregularities and the cycle of the bike, in some models it is a spring, in the other. a sealed chamber;
  • damper. shock absorption of small irregularities that must be worked out quickly;
  • body. that which carries the main load: the head tube, inner tubes (connecting rods), the crown connecting the steering and inner tubes, legs (the lower shock-absorbing block, which includes the connecting rods), gorilla (the bridge connecting the legs);
  • accessories. switches and settings on the crown, legs, a set of fasteners for the wheel axle and brakes, anthers and cuffs to protect the mechanisms.

Bicycle front fork part names

This structure changes slightly in non-standard fork layouts. For example, inverted front forks have downward-facing cranks, and this structure dampens more minor bumps, but increases weight and maintenance time. the mechanism gets dirty more quickly.

What is bike seatpost cushioning?

For many bike owners, it becomes a real discovery that experts say that good cushioning is also provided by the pin under the saddle.

Those looking to increase cycling comfort will fit the damping pin themselves. But on expensive two-wheeled vehicle models, it is built in by default. The device of the clever device includes a pipe, where there is an elastic spring, and a damper made of rubber. When the bike hits road bumps, the element moves vertically inside the pipe and successfully dampens vibrations.

The telescopic damped unit has a number of significant disadvantages:

  • blows are softened only along the axis of the pin, others remain the same;
  • springs and saddle sag.

Therefore, the designers have developed an analogue, which is called a parallelogram. The product consists of the following parts:

  • a pipe placed under the saddle;
  • levers fixed by hinges;
  • rubber damper centered between the levers.

Thanks to an unusual device, the seat is displaced along a smooth arc, while the elastomeric component changes and takes the desired position. The movement of parallelogram pins is much lower than that of telescopic models, at the same time, experts note them as durable and resistant to small bumps and irregularities, pits.

Bicycle fork: remove, disassemble, assemble, install

It would seem, why do bicycles and cyclists need a suspension fork? But for both, it is extremely useful: a well-matched and adjusted fork can significantly reduce the load on the palms and hands while riding, improve the handling of the bike, and in addition, increases the service life of the frame and steering bearings by reducing the vibration effect. With proper care, the life of the plug can be extended several times. This will certainly be pleasant to the zealous owner of a two-wheeled friend, given the high cost

  • cleaning and lubricating the feet on the oil seals. every 100-150 km of the distance traveled;
  • inspection for cracks in the “pants” of the plug, lubrication of oil seals with disassembly. every 500-1000 km;
  • for oil forks. oil changes annually or after 4000-5000 km of travel.

Among the tools necessary for working with a bicycle fork are a screwdriver, pliers, a wrench, a small adjustable gas wrench; taking into account the specifics of working with oil, it is advised to stock up on rags or rags, in addition, work can be performed with gloves to protect hands from damage and pollution.

Why you need to remove a bicycle fork

Obviously, there is no need to simply dismantle it from the bike. There are a number of reasons for this. replacement, overhaul and service. Replacement means removing an unusable part and installing a new one instead.

Repair. partial replacement of components. These can be bearings, washers, spring, damper or oil seal. Service includes adjustment, cleaning, lubrication.

The main symptoms that indicate removing the fork from the bike and putting it in order:

  • knocking on the move;
  • the fork is stuck and not adjustable;
  • bearing wear;
  • lack of lubrication (creaks);
  • cranking, heavy steering;
  • cracked legs and pants.

The device of the classic front shock absorption system is a metal spring and a rubber damper. Shrinkage of the spring and elongation of the elastomer rod degrade the properties of the shock absorber, making it stiffer. Regardless of the setting, the fork will knock on obstacles.

Backlash and tight handlebar travel indicate worn bearings and o-rings, as well as a dirty fork cavity. A suspicious creak when the bike is moving indicates that it is necessary to lubricate the part, and you cannot do without removing it.

Any mechanical damage leads to unexpected breakdown of the system. If cracks are found on the body and legs, the fork should be immediately replaced with a new one.!

In disassembling the shock absorber with your own hands, you will need tools:

  • screwdriwer set;
  • flat sharp object;
  • sliding wrenches;
  • hexagon;
  • small hammer.

When working, it will be necessary to clean and lubricate the part again, so you will need a can of grease, a few soft rags and gloves.

  • check the bike fork for integrity every 500. 1000 km;
  • clean the feet on the oil seals every 150. 200 km of the track;
  • apply a little grease to the stuffing box of the legs several times a season;
  • specially for hydraulic shock absorbers. change the oil every 5000 km.
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How to remove and install the plug. step by step instructions

The first step is to get rid of the front wheel. To do this, turn the bike upside down. Release rim brakes by swinging out the clamping bow. With the discs, you can immediately start removing the wheel. Wings and other devices are immediately removed.

We put the bike in the usual position. Now you need to pull out the steering wheel and remove the plug from the glass:

Completely unscrew the steering pin fasteners, or “anchor” bolt.

The steering wheel is carefully removed from the fork. You can immediately wipe the pipe with a soft cloth.

Use a thin sharp object (screwdriver or office knife) to pry the retaining metal washer over the glass.

Use the same tool to press out the gasket under the washer. As soon as the ring comes off the edge of the glass, gently pull it out with your hands.

Raise the frame and gently pull the fork out from below. Why? To avoid damaging or losing bearings.

Next, you need to separate the crown from the stem. To do this, it is necessary to knock out the connecting ring on which the steering column bearing rests.

Carefully use a thin sharp object and a hammer to separate the ring from the edge of the fork. This completes the removal process.

How to put the fork back on the bike

First, inspect the bearing ring. There should be no damage or broken edges on it. Otherwise, you will need to replace it (if an old plug is installed). Assembly sequence:

Put the ring on the joint of the fork with the steering column.

Cover it with an adjustable wrench from above.

Using a hammer, press in the ring evenly with soft blows on the jaws of the key. We hammer “by sound”: while he is deaf, we continue to press, sonorous. the ring has fallen into place.

Lubricate the surface of the stopper (grease. lithol-24, buksol or special composition).

Place the bearing carefully with the balls facing up. You can also apply a little lubricant to it. A sealing washer must be placed under the bearing.

Carefully insert the stem into the glass and repeat all removal operations in the reverse order.

How to remove and disassemble the front bike fork

A bicycle fork serves more than just a link between the frame and the front wheel. On MTB models, it also acts as the main shock absorber, smoothing out vibrations, stress on the arms and negative effects on the mechanisms and the frame. Like any mechanism, it requires periodic maintenance, adjustment and replacement of component parts. And all this will require removal and disassembly. Is it possible to disassemble the bike fork by yourself? Quite, it only takes a little time, a few simple tools and accuracy.

Dismantling the front fork for parts

You don’t need to disassemble the part to replace it, but its repair will require you to “fit” into the mechanism and thoroughly dig into it. Let’s consider how to sort out a spring-elastomer type suspension fork:

  • Unscrew the bottom fasteners with a hex wrench.
  • Remove the spring compression adjustment bolt. Preload. It is the main damper travel regulator.
  • Remove the elastomer restrictor or damper.
  • Take off the “pants”.
  • Using a screwdriver, remove the seals from the pants.

How to remove a mountain bike fork and headset

The main reasons why the fork squeaks, makes knocks and does not smooth out vibrations while the bike is moving include wear of parts, water and dirt ingress, lack of internal lubrication. We put in order:

  • Remove all dirt from the inside of the pants.
  • Thoroughly wipe the fork legs, spring and seals.
  • Replace the defective part if necessary.
  • Install the elastomer damper (fill oil through the nipple for the hydraulic fork).
  • Lubricate the inner cavity. inject oil from a can.
  • Install Mounting Bolt and Preload.

It looks like a do-it-yourself bicycle fork bulkhead. Is it needed for a new part? There is an opinion that a plug that has been sorted out at once will be better tuned and will last longer. Much depends on the quality of the kit, but it will be found out in real riding conditions.

removing, fork, mountain, bike

Scheduled repairs are done as needed, bulkhead once a season. And of course, you shouldn’t forget about prevention. After each ride, remove dirt from the surface of the oil seals, lubricate, check the fasteners and integrity.

Fork maintenance intervals

The frequency of changing the lubricant of a bicycle fork depends not least on the road surface on which you are riding. If there is an abundance of dust, mud, sand and other abrasive material on your routes, then the frequency of service should be increased. Here are the average figures after which maintenance should be performed.

Approximately every 700-800 km, the oil seals should be disassembled and lubricated, and every 4000-5000 km the entire fork is moved and lubricated.

Why remove and disassemble the bike fork

A bicycle fork, like all other components, can be replaced, repaired or serviced. Therefore, before proceeding with these procedures, we need to remove it from the bike, and in some cases disassemble the shock absorber for parts. In what cases will we have to remove it? First of all, this is when it is replaced by another. Secondly, it may be necessary to replace bearings and / or support cups, apply new lubricant, and also, there are times when it is necessary to align the steering tube or perform other repair work.

How To Replace Your Mountain Bike Fork

Disassembling a fork shock absorber is most often necessary to replace lubricant or worn components. For example, these can be oil seals (cuffs), etc.

How to remove, disassemble and lubricate a bicycle fork

If you do not know how to remove and disassemble a mountain bike suspension fork for maintenance, repair or replacement, then this article will help you find out what you need for this, and how to do it at home. Also, such questions will be considered here: how and how to lubricate the front fork, the frequency of maintenance and other tips on this topic. All this will be presented in the form of detailed instructions with pictures for each action, as well as a video for disassembling a bicycle suspension fork. In this article, we will analyze the RST GILA 100 mm spring-elastomer fork with disc brake mountings.

How to disassemble a bicycle suspension fork

After we have removed the suspension fork from the bike, old used grease should be removed from all of the above components, namely the bearings, cups and raceways, as well as the steering tube and other areas. It’s not worth applying a new one yet, we will add it back to the glass at the stage of installing the plug.

Next, let’s start disassembling the shock absorber for further lubrication replacement.

  • Turn the fork over and unscrew the mounting bolts.
  • We remove the pants from the legs of the fork. If necessary, remove the oil seals.
  • We remove used lubricant from all accessible surfaces. This procedure can be left for later and performed after complete disassembly, but it is preferable to do it right away in order to avoid oily marks on clothes, tools, etc. Do not forget to remove dirt and grease from the cuffs of the bicycle fork, as well as from the inside of the pants themselves.
  • Then remove the lower travel stops and stop stops. To do this, we apply a little effort and pull them off the rods.
  • We unscrew the adjustments on each of the fork legs. They are unscrewed using a special key, which, unfortunately, we did not have. Therefore, we had to make our own self-made key for these cases. We will attach a photo below, suddenly someone will come in handy. We take out the springs with caps and elastomers, as well as two rods (one from each leg).
  • Removing old grease from all fork surfaces.
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This completes the process of disassembling the bicycle fork shock absorber. Next, apply new grease. What can be used as a lubricant, we will consider below.

Many people advise pouring liquid machine oils, sewing machine oil, and others into their forks. Personally, in my experience, a deterioration in the operation of the fork shock absorber was noticed (jerks were observed during compression and rebound of the spring). And if liquid oils worked better, manufacturers would have filled them in initially, which they do not.

We figured out how to lubricate a bicycle fork. Next, let’s look at how to do this. We apply grease to the spring with excess (we ram the lubricant between the spring rings), the excess will come out through the hole under the stem and, if there is an excess in the pants, it will be squeezed out through the stuffing box seals (but you shouldn’t overdo it either). We also apply grease to the grooves of the cuffs and add forks to the pants. We lubricate all rubbing parts with a thin layer.

Before installing the plug into the glass, do not forget to lubricate the bearings, rings and cups.

This completes the lubrication process and you can go back to assembling and installing the bicycle fork.

How to remove a bicycle fork

Below you will find detailed instructions for dismantling the front suspension fork with explanatory pictures.

  • First of all, we carry out preparatory work, namely, we unscrew everything that is attached to the plug. In our case, this is the brake caliper, as well as the front disc brake hose, which is clamped to the fork legs. If you have V-brakes installed, then dismantle them. This also applies to the speed sensor from the bike computer, front fender, etc.
  • Unscrew the bolts securing the stem to the steering tube, and then unscrew the bicycle fork anchor bolt.
  • Carefully remove the steering wheel together with the stem and lower it down. At this stage, you should act carefully so as not to damage the hydraulic lines or accidentally hitting the metal parts of the steering wheel on the frame, so as not to scratch the latter.
  • Remove the spacer rings and the guide sleeve (cone). To do this, carefully pry it with a small flat screwdriver in the area of ​​the cut. Then we take out the upper rolling ring and the upper bearing. All these actions are illustrated by the pictures below.
  • All operations have been completed and now you can carefully remove the steering tube from the glass. After that, it remains for us to get the bearing, the lower rolling ring and remove the front wheel. To do this, we loosen the eccentric or unscrew the fixing bolts (depending on the type of attachment). This completes the process of removing the bike fork.

How to assemble and put the plug back

The process of assembling and installing a bicycle suspension fork is carried out in the reverse order. The only thing that you should carefully and carefully perform this operation in order to avoid incorrect installation of components. After you have installed the assembled fork back on the bike, secured the stem, be sure to check that there is no play in the steering tube in the frame glass. If they are observed, then be sure to eliminate them before the trip.

After you set everything up and start riding, the first time there will be an abundant release of grease through the cuffs of the bike fork pants. Don’t worry, this is normal. Over time, excess oil will be squeezed out, and this process will stop. During this period, do not be lazy, and do not forget to wash off excess lubricant after each trip.

How and how can you lubricate a bicycle suspension fork

I use Litol-24 grease to lubricate all of the bike’s front fork assemblies, including both the shock absorber and the head tube bearings. It is believed that it negatively affects aluminum parts when exposed to moisture. But using it for five seasons, no negative consequences were noticed. The advantages of this grease include good temperature resistance. It does not thicken both in severe frost down to.50 C and in extreme heat (up to 150 C).

Many people advise pouring liquid machine oils, sewing machine oil, and others into their forks. Personally, in my experience, there was a deterioration in the performance of the fork shock absorber (jerks were observed during compression and rebound of the spring). And if liquid oils worked better, manufacturers would have filled them in initially, which they do not.

We figured out how to lubricate the bicycle fork. Next, let’s see how to do this. We apply grease to the spring with excess (we ram the lubricant between the spring rings), the excess will come out through the hole under the stem and, if there is an excess in the pants, it will be squeezed out through the stuffing box seals (but you shouldn’t overdo it either). We also apply grease to the grooves of the cuffs and add forks to the pants. We lubricate all rubbing parts with a thin layer.

Before installing the plug into the glass, do not forget to lubricate the bearings, rings and cups.

This completes the lubrication process and you can go back to assembling and installing the bicycle fork.

Fork routine inspection

Often, it is the prophylactic inspection of the fork that makes it possible to timely identify minor deviations from the norm in the operation of the device, and, accordingly, prevent a more serious breakdown. Typically, a visual inspection of the fork includes checking:

  • dropout states;
  • fork legs for dents, scuffs and other marks;
  • oil seals (anthers) for mechanical damage and oil leaks from under them;
  • pressure in air chambers;
  • the presence and condition of the lateral backlash of the legs in the “pants”;
  • the condition of the fastening bolts under the “pants” of the fork and adjustment knobs.

Bicycle fork device

Consider the procedure for removing a fork from a bicycle.

First you need to turn the bike with the wheels up, and after releasing the brake (in the case of a rim brake), remove the front wheel. After that, you can remove the stem with the stem and the head tube.

Then we remove directly the plug itself. It is important to ensure that the balls are not lost from the bearings when removing the fork. Any sharp object can be used to remove the tapered support ring from the fork stem. After that, you can start repairing or servicing the plug.

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Next, consider the procedure for disassembling the fork (as an example, a spring-electric fork will act):

  • The lower fixing bolts are unscrewed using hexagons.
  • The preload spring force adjustment bolt is unscrewed (it is important to remember the bolt stroke).
  • An elastomer is obtained, which is assigned the function of limiting the travel of the spring (sometimes, if necessary, you can change the size of the elastomer by cutting).
  • The bolts are unscrewed and “pants” are taken out. In this case, you need to monitor what flows out of there (dirt, water, oil).
  • Anthers are taken from the “pants” with a screwdriver, as well as bosses, which for this need to be rotated around their axis.

Further, all components are checked for cracks or other damage and washed with kerosene. Items requiring lubrication are treated with an appropriate material. It is worth noting that it is better to lubricate the spring with a thick grease, which will increase the efficiency of the bicycle fork.

Some cyclists even go through only purchased forks, trying to individually debug the device.

The fork assembly process is performed in the reverse order of the parsing process, so we will not describe it.

It is better to entrust the procedure for replacing the fork on a bicycle to a qualified specialist or perform it under the supervision and according to the recommendations of the master.

As practice shows, owners can be divided into two types:

  • Those who ride a bike until the last “breath” of transport, and only when all systems completely fail, think about repairing the device.
  • Those who carefully monitor the condition of the bike, follow the rules for caring for it and prevent any breakdowns.

It is no secret that the approach of the first type of owners ultimately costs much more, because often it is necessary to replace the components of the bicycle that are not recoverable. In addition, there are times when the bike can no longer be saved.

In principle, experienced users are quite capable of handling fork repairs on their own, because over time, every cyclist who shows an interest in his transport will remember the name and functions of the parts, and it is no longer difficult for him to find the cause of the problem. If there is no relevant experience and skills in repairing a bicycle, then you should not experiment and it is better to contact competent specialists. In addition, ignorance of the design features of the fork itself can lead to difficulties in eliminating its breakage.

This video review will help you consolidate the acquired skills:

When do you need to remove the fork from the bike??

Removing the bike fork will be necessary in the following cases:

  • If you need to completely replace the old mechanism with a new one.
  • If it is necessary to replace bearings with support cups (possibly without them) or oil seals.
  • Apply new grease if necessary.
  • If necessary to align the steering tube.

The main symptoms of plug replacement are manifested in the occurrence of some extraneous sounds or in case of improper performance of their functions by some mechanisms:

  • extraneous knock or creak when moving;
  • insertion of the fork into the wedge, which does not allow for adjustment;
  • the steering wheel begins to turn, while making its course heavier;
  • “Legs” and “pants” have characteristic damage (cracks).

How to remove and install the plug. step by step instructions

The first step is to get rid of the front wheel. To do this, turn the bike upside down. Release rim brakes by swinging out the clamping bow. With the discs, you can immediately start removing the wheel. Wings and other devices are immediately removed.

We put the bike in the usual position. Now you need to pull out the steering wheel and remove the plug from the glass:

Completely unscrew the steering pin fasteners, or “anchor” bolt.

The steering wheel is carefully removed from the fork. You can immediately wipe the pipe with a soft cloth.

Use a thin sharp object (screwdriver or office knife) to pry the retaining metal washer over the glass.

Use the same tool to press out the gasket under the washer. As soon as the ring comes off the edge of the glass, gently pull it out with your hands.

Raise the frame and gently pull the fork out from below. Why? To avoid damaging or losing bearings.

Next, you need to separate the crown from the stem. To do this, it is necessary to knock out the connecting ring on which the steering column bearing rests.

Carefully use a thin sharp object and a hammer to separate the ring from the edge of the fork. This completes the removal process.

How to remove a bicycle fork

Below you will find detailed instructions for dismantling the front suspension fork with explanatory pictures.

  • First of all, we carry out preparatory work, namely, we unscrew everything that is attached to the plug. In our case, this is the brake caliper, as well as the front disc brake hose, which is clamped to the fork legs. If you have V-brakes installed, then dismantle them. This also applies to the speed sensor from the bike computer, front fender, etc.
  • Unscrew the bolts securing the stem to the steering tube, and then unscrew the bicycle fork anchor bolt.
  • Carefully remove the steering wheel together with the stem and lower it down. At this stage, you should act carefully so as not to damage the hydraulic lines or accidentally hitting the metal parts of the steering wheel on the frame, so as not to scratch the latter.
  • Remove the spacer rings and the guide sleeve (cone). To do this, carefully pry it with a small flat screwdriver in the area of ​​the cut. Then we take out the upper rolling ring and the upper bearing. All these actions are illustrated by the pictures below.
  • All operations have been completed and now you can carefully remove the steering tube from the glass. After that, it remains for us to get the bearing, the lower rolling ring and remove the front wheel. To do this, we loosen the eccentric or unscrew the fixing bolts (depending on the type of attachment). This completes the process of removing the bike fork.