TM-9-2320-273-34
TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1980
TM-9-2320-273-34 - Page 701 of 801
TM 9-2320-273-34
(5)
Remove the pump from the vise. Holding the pump in both hands, tap the shaft on a
wooden block to separate the front cover (4) from the rear cover (15). Bodies (11 ) and adapter section
(12) will remain with either the front cover or rear cover.
(6)
Remove adapter section as follows:
(a)
If the adapter section remains with the front cover and body, tap the input shaft
with a wooden block to separate the adapter section and front body.
(b)
if the adapter section remains with the rear cover and body, use a plastic mallet to
tap the inlet and outlet port bosses alternately to separate the adapter section and body.
(7)
To separate the front body and front cover or the rear body and rear cover, tap the end
of the protruding shaft with a wooden block.
(8)
Remove the four thrust plates (8) and sealing rings (6).
Be careful not to damage the sides of the
groove or face of the front cover.
(9) Using a knife blade, lift the loading seal (7) out of the groove in the front cover (4).
(10)
Remove the sealing ring (6) from the rear cover ( 15) and adapter section ( 12) following
the same procedure as in step (9) above.
(11)
Remove the retaining ring (2) from the shaft seal cavity in the front cover. Use internal
Truarc type snap ring pliers.
(12)
Clamp the front cover in a vise, flat side up and drive the shaft seal (3) out of the seal
cavity. Use a screwdriver approximately 3/8 inch at the tip held at a 45 degree angle.
b.
Inspection.
(1)
Clean and dry all parts.
(2)
Inspect the drive gear for damaged splines.
(3)
Inspect both the drive and driven gears at bearing points, sides and tooth faces for rough
surfaces and signs of excessive wear.
(4)
If damage or signs of excessive wear are noted, the gears should be replaced.
(5)
Inspect the inside diameter of the bushings in both covers for scoring. If the bushings are
grooved or badly pitted, the cover must be replaced. (Bushings are not available as separate items. )
NOTE
As the pump is used, the inside diameter
of bushings will change from dull gray to
bronze in color. Ignore my variation in
color.
20-18
CAUTION
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