D6D TRACTOR POWER TRAIN – Recoil Springs

Remove And Install Recoil Springs

Start By:

a. remove hydraulic track adjusters

1. Remove two bolts (3) from each stop (1). Remove the stops from the track roller frame.

2. Fasten a hoist around recoil spring (2). Remove the recoil spring. The weight of the recoil spring is 135 kg (300 lb).

NOTE: The following steps are for installing the recoil springs.

3. Fasten a hoist to recoil spring (2) and position it in the track roller frame.

4. Install two stops (1) and the bolts.

End By:

a. install hydraulic track adjusters

Disassemble And Assemble Recoil Springs

Start By:

a. remove recoil springs

------ WARNING! ------

The recoil spring is assembled with a force of several tons. The correct tooling and procedure must be used during disassembly and assembly of the recoil spring.

--------WARNING!------

1. Disassemble the recoil spring with tooling (A) as follows:

a. Fasten a hoist to the recoil spring. Put the recoil spring in position between plates (1) and (3). Put the center of the pilots (6) and (7) in alignment with the centers of plates (1) and (3). Move the hydraulic cylinder enough to hold the recoil spring in position.

b. Make an adjustment to nuts (5) so the distance between plates (1) and (3) are equal at each of three legs (2).

c. Turn nuts (8) until there is a distance of 25.4 mm (1 in.) between nuts (8) and plate (4).


------ WARNING! ------

The distance between the plates must be the same at each leg at all times so the recoil spring does not twist and come out of tooling (A).

--------WARNING!------


d. Put the recoil spring under enough compression to remove nut (9). Remove the nut.

e. Slowly release the compression on the recoil spring.

f. Turn nuts (5) and move plate (4) and the cylinder away from the recoil spring. Put the spring under compression. Turn nuts (8) until they are 25.4 mm (1 in.) from plate (4). Slowly release the compression on the recoil spring.

g. Repeat Steps e and f until the recoil spring is no longer under compression.

2. Fasten a hoist to the spring. Remove spring (11). Weight of the spring is 72 kg (160 lb). Remove pilots (6) and (7). Remove sleeve (10) and bolt (12) from tooling (A).

NOTE: The following steps are for the assembly of the recoil springs.

------ WARNING! ------

The recoil spring must be assembled with a force of several tons. The correct tooling and procedure must be used during assembly of the recoil spring.

--------WARNING!------

3. Assemble the recoil spring with tooling (A) as follows

a. Put pilot (7) in spring (1). Install bolt (12) in pilot (7). Put sleeve (10) on the bolt.

b. Fasten a hoist to the spring. Put the spring, pilot, bolt and sleeve in position between plates (1) and (3). Put pilot (6) between plate (1) and the end of the spring. Put the centers of pilots (6) and (7) in alignment with the centers of plates (1) and (3). Move the hydraulic cylinder enough to hold the recoil spring in position.

c. Make an adjustment to nuts (8) so the distance between plates (1) and (3) is equal at each of three legs (2).

------ WARNING! ------

The distance between the plates must be the same at each leg, at all times, so the recoil spring does not twist and come out of tooling (A).

--------WARNING!------


d. Put the recoil spring under compression. Make sure bolt (12) is in alignment with the holes in pilots (6) and (7). Turn nuts (8) until they are against plate (3).

e. Move plate (4) and the cylinder toward the recoil spring. Put the spring under compression until the distance between the outer surfaces of pilots (6) and (7) is 50.8 cm (20.00 in.). Install nut (9) on the bolt.

f. Fasten a hoist to the recoil spring and remove it from tooling (A).

End By:

a. install recoil springs

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