Figure 3-90. Removing retaining ring from reverse gear housing.

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Figure 3-89. Reverse gear assembly, cross-section view.

TM-55-1905-217-34 Landing Craft Mechanized; Steel; DED; Overait Length 74 Feet Mod 1 Marl VIII Navy Design LCM-8 Manual

Figure 3-91. Removing oil seal rings from reverse gear drive shaft.

TM 55-1905-217-34

Figure 3-90. Removing retaining ring from reverse gear housing.

(g) Remove the clamps, board and blocks from the reverse gear housing and reverse clutch

drive plate.

(h) Thread a piston remover tool J 4746 (T-head bolt) into each of two tapped holes in the

forward face of the reverse clutch drive plate (22).

(i) Pull the reverse clutch drive plate straight forward until the drive plate is free in the gear

housing. Then, lift the drive plate, together with the ring gear (32) and clutch plate assembly (23) from

the reverse gear housing.

(j) Remove the sixteen clutch release springs (3) and the three drive plate dowel pins from the

reverse gear housing and reverse clutch drive plate.

(k) Remove the reverse clutch plate retaining ring (33) from the groove in the reverse ring gear

with a screwdriver. Lift the clutch plate from the ring gear.

(l) Thread a piston remover Tool J 4746 (T-head bolt) into each of two tapped holes in the

forward face of the reverse clutch piston (17).

(m) Place a 2 inch x 4 inch x 2 foot length of wood block over the edge of the reverse gear

housing and beneath the cross bar of each remover tool. Push down evenly on the end of the two wood

blocks, and break the oil seal (vacuum lock) in back of the piston, thus freeing the piston in the housing.

(n) Remove the two wood blocks. Pull the piston straight forward out of the reverse gear

housing.

(o) Insert a small screwdriver beneath the reverse clutch piston seal ring in the gear housing

and work the seal ring (14) out of its groove. Then, remove the seal ring and seal ring expander from the

groove in the gear housing.

(p) Remove the seal ring and seal ring expander from the reverse clutch piston in the same

manner.

(q) Remove the reverse gear housing from the reverse gear adapter plate (33, figure 3-88) as

follows:

1. With the reverse gear components removed from the reverse gear housing, remove

the reverse gear drive thrust washers and snap ring from the reverse gear housing.

2. Support the reverse gear housings and adapter plate on three wood blocks, with the

rear face of the adapter plate facing up.

3. Remove the eleven elastic stop nuts securing the reverse gear housing to the

adapter plate.

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