Assembly Of Sundstrand Tandem Pump - Toro Reelmaster 335-D Service Manual

Assembly of Sundstrand Tandem Pump

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1. Capscrew
2. Washer
3. Pump housing
4. Pump housing
5. Center section
6. Gasket
7. Alignment pin
8. Valve plate (R.H.)
1. Clean and lightly oil parts before assembly. Tighten
all threaded parts to recommended torque value.
IMPORTANT: Most parts have critical, high toler ­
ance surfaces. Use caution to prevent damage to
these surfaces during assembly. Protect exposed
surfaces, openings and ports from damage and
foreign material.
2. Install swashplate into housing. Make sure swash­
plate control shaft is located on correct side of housing
(note marks made during disassembly). Install swash­
plate bearings into housing and onto swashplate trun­
nions.
3. Install trunnion cover (with o-ring and trunnion bear­
ing) into housing and over swashplate trunnion.
4. Use an arbor press to press a new seal into trunnion
seal cover. Outer face of seal should be pressed flush
with outer surface of seal cover. Be careful not to
damage the seal.
Sundstrand Tandem Pump Repairs
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9. Valve plate (L.H.)
10. Valve plate pin
11. Cylinder block assembly
12. Pistons
13. Slipper guide
14. Piston block
15. Thrust plate
16. Drive shaft
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8
Figure 33
5. Install trunnion seal cover with o-ring, seal and trun­
nion bearing into housing and over swashplate trunnion
(see Trunnion Seal Replacement). Wrap end of swash ­
plate control shaft with thin plastic to prevent damage to
seal lip during installation.
6. Install hex tapping screws and tighten to a torque of
6 to 9 ft-lb.
7. Using caution to not damage the sealing surface,
press ball bearing onto drive shaft. Install bearing retain­
ing ring onto shaft.
8. Install drive shaft and bearing into housing.
9. Install input shaft seal, seal cover and o-ring as
described in Tandem Pump Shaft Seal Replacement.
Coat thrust plate with petroleum jelly and install onto
swashplate. The thrust plate is reversible.
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17. Bearing
18. Retaining ring
19. Drive shaft
20. Bearing
21. Retaining ring
22. Retaining ring
23. Swash plate
24. Needle bearing
25. Drive coupling
Reelmaster
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17
23
®
335-D