Bearing (4 rqr)
Idler sprocket (2 rqr)
Nut (8 rqr)
Nut (8 rqr)
Fitting (2 rqr)
Adjusting rod (4 rqr)
Cotterpin (8 rqr)
Idler shaft (2 rqr)
Bushing (2 rqr)
Spring (8 rqr)
Flatwasher (12 rqr)
Adjusting block (4 rqr)
Figure 5-7. Crawler idler sprocket and idler shaft, exploded view.
b. Cleaning, Inspection, and Repair.
bearings for wear, or scoring. Inspect fittings to assure
(1) Clean all parts and dry thoroughly.
grease run through.
(2) Inspect adjusting blocks, idler shaft, idler
(3) Repair by welding, or replace defective
sprocket, or flatwashers for wear or other defect.
Inspect springs for damage or weakness.
(4) Replace all cotterpins with new, at
adjusting rod. and nuts for defective threads. Inspect
Section V. HORIZONTAL PROPELLING SHAFT
(1) Run crawler up on timbers, or other
supports, so that bottom of propelling gear oil pan is at
The horizontal propelling shaft is located within crawler
least 12 inches above the ground.
carbody and transmits power to crawler drive chains. A
(2) Stop engine.
drive sprocket is located at each end of the horizontal
(3) Drain propelling gear oil pan (LO 5-3810-
propelling shaft, outside the carbody. The crawler drive
chains (one to each track) loop over sprockets of
(4) Disconnect all lubrication lines on horizontal
horizontal propelling shaft and crawler drive shaft (para
propelling shaft (LO 5-3810-206-12).
(5) Remove propel brake bands (TM 5-3810-
(6) Remove propel chain (TM 5-3810-206-12).
5-13. Horizontal Propelling Shaft
a. Removal and Disassembly.