Denison Hydrostatic Repair

March 4, 2019 Comments Off

Shaft Assembly Mechanism
1.Fit the pump so that it rests on port block
face.
2.Placing the shaft and bearing assembly (1) in
the mounting flange.
3.For a non-flexible shaft application use the shim (2) that
will give the least clearance around the shaft
bearing. It is best not to use a shim with a floating shaft.
Take away the two screws that were in there just
to hold the cradle in the mounting flange.
4.Setting the retaining ring (3) in the mounting
flange.

SEAL ASSEMBLY
1.The shaft seal is obtainable only as a complete
assembly. Before installation look over all the
seal parts. Handle the lapped seal seat and
the carbon ring very cautiously, so that both parts
are free of scratches, cracks or other
damage.
2.Affixing the spring retainer (e) over the shaft
and next to the bearing-retaining ring.
3.Place the spring (d) up next to the retainer.
4.Apply oil to the inside surface of the rubber
friction ring (f) and put the shell that has
the friction ring and the carbon ring (c) over
the shaft with the carbon ring exposed.
5.Put an application of grease to the square section rubber
seal (a) and place on the seat (b).
6.Fix the seal and seat in the seal retainer (6).
The lapped part of the seat must face the

PARTS LIST

Nton.Part NotuacrtpUM
11513-43968Splined shaft assy. See Fig. 1

1S13-43969Keyed shaft assy. See Fig. 1
21033-53963 or 53984Shim
31356-65013Retaining Ring
41623-00008Shaft seal
51033-71567Seal retainer gasket
81033-71574Seal retainer
74631-45007Nylite gasket
84306-40021Hex head screw
91033-71616Balance stem
102359-09240Socket head cap screw
111033-70546Balance plate
122033-71247Spacer
13235949180Socket head cap screw
148631-45007Nylite washer
158353-25018Hex head washer screw
161See BelowControl assy, (output)
171See BelowControl assy, (input)
188306-40184Hex head cap screw
191671-000170-Ring-
201671-000480-fling’
•Some Controls use gasket #035-53575 in lieu of 0-Rings.
OUTPUT CONTROLPUT NO.
Standard with volume indicator 313-42064
Torque limiter.313-42180
INPUT CONTROL
[“a” MTG.–[ “A” MTG.-I
f “B” MTG. [ “A” MTG.
MTG.-CW -CCW
102,103S13-42069
MTG.-CCW MTG.-CW
102.103S13-42070
302.303S13-42073
402.403S13-42065
4A2.4A3S13-42066

CONTROL COVER ASSEMBLIES
1.Grease the O-rings (19 & 20) and put in
counter bore and groove in covers.
2.Place the cover assemblies (16 & 17) over the
dowel pins on the housing pads and fasten
the seals (14) and screws (15). Torque to 30
ft. Ibs.
The input cover assembly ought to be installed on the right hand side of the housing on pumps with “B” suffix. Mount the output cover assembly on the right hand side on models with “A” suffix.

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Susan Richardson

Hydrostatic Transmission Service

Denison Hydrostatic Repair

Denison Hydrostatic Repair

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