DIRECT SUPPORT AND GENERAL SUPPORT
Section I. INTRODUCTION
5-1. General. This chapter contains Direct Support and General Support level maintenance procedures for
components of the M116A1 trailer added when the trailer is used as part of the PU-751/M power unit. These
components are not covered in the overall trailer maintenance manual. For all other direct and general support
maintenance procedures on the trailer, refer to TM 9-2330-202-14&P. For direct and general support
maintenance procedures on the generator set, refer to TM 5-6115-584-34.
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.
Leg Prop Assembly Replacement.
(See figure 5-1.)
(a) While supporting leg prop assembly, pull out angled bar (1, figure 5-1) and lower leg from traveling
(b) Line up boss (2) on upper leg (3) with holes in bracket (4) and insert angled bar(1) to lock leg in
(c) Remove either one of two cotter pins (5) from leg prop assembly pivot shaft (6).
(d) While steadying leg prop assembly, remove shaft (6) with remaining cotter pin (5) in place.
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.
(e) Lift leg assembly slightly to take weight off angled bar (1) and remove bar.
(f) Lower leg assembly from bracket (4).