INTERMEDIATE (FIELD) (DIRECT SUPPORT AND
GENERAL SUPPORT) MAINTENANCE INSTRUCTIONS
Section I. INTRODUCTION
This chapter contains Intermediate Direct Support and General Support level
maintenance procedures for components of the M116A2 trailer added when the trailer is used as part
of the PU-753/M power unit. These components are not covered in the overall trailer maintenance
manual. For all other intermediate direct. and general support maintenance procedures on the trailer,
refer to TM 9-2330-202-14&P. For intermediate direct and general support maintenance procedures
on the generator set, refer to TM 5-6115-585-34.
Before performing any maintenance that requires climbing on or under trailer,
set trailer handbrakes, chock wheels and lower rear leg prop. Injury to
personnel could result from trailer suddenly rolling or tipping.
Section Il. MAINTENANCE OF POWER UNIT TRAILER
5-2. Leg Prop Assembly Maintenance. Maintenance of the leg prop assembly at the Intermediate
Direct Support and General Support level consists of repairing or replacing the assembly as required.
a. Leg Prop Assembly Replacement. (See figure 5-1.)
While supporting leg prop assembly, pull out angled bar (1, figure 5-1) and lower leg
from traveling position.
Line up boss (2) on upper leg (3) with holes in bracket (4) and insert angled bar (1) to
lock leg in support position.
Remove either one of two cotter pins (5) from leg prop assembly pivot shaft (6).
While steadying leg prop assembly, remove shaft (6) with remaining cotter pin (5) in
When angled bar is removed in step (e), leg prop assembly will fall from
bracket if not supported. To prevent injury to personnel or damage to
equipment, do not permit leg assembly to drop.
Lift leg assembly slightly to take weight off angled bar (1) and remove bar.
Lower leg assembly from bracket (4).
Remove three screws (7), three flat washers (8), three Iockwashers (9), and three
nuts (10) and remove bracket (4) from trailer frame (11).