| Tweet |
Custom Search
|
|
|
||
 TM 55-1905-223-24-1
(1) Use a small hammer and a drift. Remove straight headed pin rollers (51) from retaining pin (52).
WARNING
Parts are under spring tension. When the retaining pin is
removed, the spring can move with enough force to cause
personal injury.
(2) Position safety relief valve (4) in vise to control tension of compression spring (2). Push on
recessed washer (1) until it does not touch the retaining pin (52).
(3) Using hammer and drift pin, drive retaining pin (52) out of safety relief valve (4).
(4) Slowly open vise until all tension of compression spring (2) is relieved.
(5) Remove recessed washer (1), compression spring (2), and plunger (3) from valve (4).
b. Perform pre-disassembly checks to oil pump (36).
(1) Flush interior and exterior of pump with solvent. Dry with compressed air.
(2) Rotate large (compound) gear (17). Acceptable clearance between large gear (17) and smaller
gear (26) is between 0.008 in (0.20 mm) and 0.032 in (0.81 mm).
CAUTION
Do not use excessive force while turning gears in following steps
or gear damage will result.
(3) Wedge piece of wood or hammer handle between gears (17 and 26) of pump to prevent
movement.
(4) Gently turn gear (26) by hand to check backlash. Acceptable backlash is betw en 0.0006 inch
e
(0.15 mm) and 0.0010 inch (0.25 mm).
(5) Remove wood wedge from internal gears.
(6) Measure oil pump idler shaft (14) end clearance. Acceptable clearance is 0.0045 inch (0.114 mm)
to 0.0085 inch (0.216 mm).
c. Disassemble oil pump.
CAUTION
Oil pump is heavy. To prevent personal injury or equipment
damage obtain assistance when lifting or moving oil pump.
3-65
|
||
|
||
