At the time the cooling system is required to
be drained, the coolant in the lube oil cooler
should also be drained as described in para-
graph 3-199 b.
(d) To drain the radiator place suitable container to collect
coolant. Remove radiator cap.
(e) Open radiator shutoff cock (21) and drain radiator
coolant into container. Needle valve (9, fig. 3-34) should be also
opened to drain the engine block.
(f) Close shutoff cock (21, fig. 3-29) and close needle
valve (9, fig. 3-34).
3-42. Hydraulic Cooler (MEP105A Only) Inspection.
Inspect fins and lines of hydraulic cooler (19, fig. 3-29) for cracks,
breaks, dents, leaks, loose mounting and other damage.
3-43. Hydraulic Sump (MEP105A Only) Inspection.
Inspect hydraulic actuator (fig. 3-32) for loose mounting, loose hose con-
nections, loose connectors, loose linkage, and other damage.
3-44. Hydraulic Sump (MEP105A Only).
a. Inspection. Inspect hydraulic sump (1, fig. 3-8) for cracks,
leaks, breaks and other damage. Inspect filler cap (3) for secure
fitting. Inspect seal on tiller cap (3) for excessive wear and other
damage. Inspect hydraulic sump sight glass (2) for legibility of
marking, loose fitting, and other damage. Inspect hydraulic sump
for cracks, loose mounting, leaks and other damage.
b. Service. To service hydraulic sump (1, fig. 3-8) refer to table
3-1 and proceeds as follows:
(1) Check oil level; level should be up to sight glass (2, fig.
(2) Remove tiller cap (3). Add hydraulic oil conforming to
Military Specification MIL-H-5606 to obtain proper level.
(3) To drain tank, place suitable container beneath drain plug
(4) and remove drain plug. Repeat step (2) to refill sump tank.
3-45. Hydraulic Filter (MEP105A Only).
a. Inspection. Inspect hydraulic filter (fig. 3-8) for cracks,
breaks, and other damage.
b. Service. To service the hydraulic filter refer to table 3-1 and
figure 3-8 and proceed as follows:
(1) Cut lockwire (5). Remove filter body (6) and filter element
(7). Discard filter element.
(2) Clean filter body with cleaning solvent, Federal Specifica-
tion P-D-680 and dry thoroughly.
(3) Soak new filter element in clean hydraulic oil conforming
to Military Specification MIL-H-5606 to remove air trapped in
(4) Install new preformed packing (8) and backup rings (9).
(5) Apply a light coat of hydraulic oil to the preformed pack-
ing (8), and backup rings (9), header (10), and the threads of the
filter body (6).
(6) Install new element in filter body (6) and fill bowl with
clean hydraulic fluid. Install filter body (6) in header (10) and
tighten. Lockwire header to filter body on the threads of the
3-46. Engine Assembly Service.
Refer to table 3-1 and service the engine crankcase as follows:
a. Check crankcase lubricating oil level using oil level gage
b. Remove engine lubricating oil filler cap and add oil as
required to obtain full level on oil level gage. See figure 3-1 for
proper lubricating oil.
c. To drain the crankcase, remove plug and place suitable
container at drain hose.
d. Open engine lubricating shutoff cock valve and drain oil into
e. Close shutoff cock and replace plug.
f. To refill the crankcase; remove the oil filler cap and add oil
until crankcase is full; verify crankcase is full by checking oil lev-
3-47. Fan Belts Inspection
Inspect drive belts (fig. 3-35) for signs of wear, damage or oil
3-48. Battery Charging Alternator Inspection.
Inspect battery charging alternator (fig. 3-36) for cracks, loose
mounting, dents, loose or damaged connector, and other defects.
3-49. Speed Switch Inspection.
Inspect speed switch (fig. 3-37) for loose mounting, loose connec-
tor and other damage.
3-50. Angle Adapter Inspection.
Inspect angle adapter (fig. 3-38) for loose mounting, breaks,
cracks and other damage.
3-51. Hydraulic Pump and Drive Assembly (MEP105A Only) In-
Inspect hydraulic pump and drive assembly (fig. 1-2) for leaks
and loose mounting.
C h a n g e 11