identical. Either can be removed or installed by the
(9) If necessary, remove nuts (4), lockwasher
procedure described below. The two propelling brakes
(3), and capscrews (16) from lever (15).
are accessible from underneath the crawler.
(10) Repeat steps (8) and (9) above for left-
hand lever.
(11) Remove bearing (13), roller (12), and
5-4.
Steering and Broke Lever Shaft
washer (14) from lever (15).
a. Removal and Disassembly.
(12) Remove keys (35) from shaft (1), and keys
(18, 19, and 20) from shaft (17).
(1) Release propel brake lock and place
propel brake lever in neutral position, then place steering
b. Cleaning, Inspection, and Repair.
wheel in position to disengage both clutches and shutoff
(1) Clean all parts and dry thoroughly.
engine (TM 5-3810-+201-12).
(2) Inspect levers, links, clevis, spring, guide
(2) Loosen nut (3, fig. 5-2) from bolts on cam
blocks, shifter yokes, and collar sets for cracks, breaks,
lever (2) and setscrew (10) on collar (7) and driveshaft
excessive wear (elongation), or other damage. Inspect
(5) in and then back to make keys (4) accessible, then
pins and shafts for straightness, wear, or roughness.
remove keys (4) from shaft (15).
Inspect bearings for scoring or wear.
(3) Remove pin (8, fig. 5-3) and disconnect
(3) Repair by welding cracks and breaks, or
clevis from lever on propel clutch shifter shaft.
straightening bends. Replace all damaged parts that
(4) Loosen setscrew (36) on collar set (6) and
cannot be repaired.
Replace defective mount-ing
loosen nuts (4) on three levers (7, 15, and 27).
hardware.
(5) Drive shaft (1) out through side frame of
crawler and remove the right-hand lever (2), links (29),
c. Reassembly and Installation.
and left-hand lever (5).
(6) Drive shaft (1) back far enough and re-
(1) Install washer (14, fig. 5-3), roller (12), and
move collar set (6).
bearing (13) on cam lever (15).
(7) Work shaft (17) out through bottom of
(2) Install capscrews (16 and 34), lock-washer
crawler mounting and remove lever (15) and cam.
(3), and nut (4) in levers (15, 2, and 5).
(8) Separate bolt (26), clevis (10), spacer
(3) Assemble bolt (26), clevis (10), spacer
(22), block (23), washer (21), spring (24), nuts (25 and 4)
(22), spring block (23), washer (21), spring (24), washer
from right-hand lever.
(21) and nuts (4 and 25) on lever (27).
(4) Raise shaft (5, fig. 5-2) into position on
under side of crawler mounting, install key (4) in shaft
(5), then install collar (7) and lever (2) on shaft (5).
(5) Change position of shaft (5) as required,
then install right hand lever (2, fig. 5-3), links (29), and
left hand lever (5) on shaft (1).
(6) Position keys (35), and lever (7) on shaft
(1) and clevis (10).
(7) Position lever (30) on link (29) of
propelling brake linkage then install pin (8).
(8) Position set collar (6) on shaft (1) and
tighten setscrew (36). Tighten nuts (4) on lever (27).
(9) Repeat steps to assemble and install
remaining lever.
5-5.
Propel Clutch Shifter
a. Removal.
(1) Remove setscrews (33, fig. 5-8) and
1
Bracket
6
Yoke shifter
washer (21) from shifter yoke (6, fig. 5-2) and lift yoke
2
Lever
7
Collar
out.
3
Nut
8
Pin (2 rqr)
4
Key
9
Lever
5
Shaft
10
Setscrew (2 rqr)
Figure 5-2. Steering and brake lever shaft, removal and
installation.
AGO 20051A
5-2
