TM 5-3805-280-24-2
Camshaft, Balancer Shafts and Timing Gear Train
REMOVE AND INSTALL BALANCER SHAFT
16
36
BUSHINGS (4-CYLINDER ENGINES)
IMPORTANT: Cylinder block front plate must be
removed in order to replace balancer
shaft bushings.
1. Remove all fuel lines from injection or rotary pump.
2. Remove front plate. See REMOVE CYLINDER BLOCK
FRONT PLATE, later in this group.
Removing Bushing
3. Remove bushings from block with JD249 Balancer
Shaft Bushing Driver and JDG963 Adapter. To remove
the rear (third) bushing, the flywheel housing must be
removed.
IMPORTANT: Make sure oil holes in bushing and
block are aligned for proper bushing
and journal lubrication.
4. Install new bushings in block with same tools used
during removal.
5. Insert balancer shaft to check for bushing-to-shaft
clearance. If shaft can be rotated by hand with a
Installing Bushing
slight-to-moderate drag, adequate bushing-to-balancer
shaft clearance exists. It is not necessary to hone
bushings to obtain specified oil clearance. Excessive
clearance can result in shaft seizure.
RG,16,DT7489 1914NOV971/1
INSPECT BALANCER SHAFT GEARS AND
THRUST PLATES
1. Inspect for broken, cracked or excessively worn gears.
NOTE: Gear removal is required for thrust plate removal.
Continued on next page
RG,16,DT7488 1914NOV971/2
13-268