Thomas 153 Repair Manual

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1-12
Assembly 137/153
GEAR PUMP 1.2
1. Have the entire seal kit available and lay out
neatly on the table (fig. C3980). Compare the old
seal kit to the new one to ensure you have the correct
one. Lightly coat all seals with seal grease. The
grease is needed to adhere the seals in their grooves.
DO NOT INSTALL DRY SEALS!
2. Prepare the body by cleaning it. Inspect the
internal and mating surfaces. Ensure the surfaces are
free of burrs and scratches.
3. Install the shaft seal into the body assembly (if
applicable). Prepare the body and shaft seal by
lightly lubricating with grease. Seat the seal in
the body assembly by hand. Then, using a shaft seal
installation tool press the seal until the tool stops on
the flange. This will insure the seal is inserted to the
proper depth.
3. Place the body assembly, with the E- ring seal
grooves facing up, into a vice with soft jaws.
Caution must be used when using a vice to avoid
distorting or damaging the mounting pilot.
4. Place the rubber seal ring in the body groove.
(fig. C4359)
5. Place the pre-load seal (black rubber E-ring) into
the body E-ring groove. (fig. C4360)
C3980
C4359
C4360
Seal Ring
Pre-Load Seal

Thomas 153 Specifications

General

Brand	Thomas
Model	153
Category	Compact Loader
Language	English