Pump Repair
Figure 93
1. Gear plate (2) 11. Drive shaft 21. Dowel pin (2)
2. Dowel pin (2) 12. Idler shaft assembly 22. Oil seal
3. Cap screw (4) 13. Dowel pin (2) 23. Pump body assembly
4. Washer (4) 14. Coupling (2) 24. Drive shaft
5. Cover assembly 15. Plate assembly 25. Plate assembly
6. Seal ring (6) 16. High press. load seal (4) 26. Ball
7. Gear plate 17. Pre-load high press. load seal (4) 27. Spring
8. Retaining ring (2) 18. Load plate (4) 28. Valve adjuster
9. Gear 19. Idler shaft (2) 29. Gasket
10. Woodruff key 20. Drive gear 30. Valve adjuster cap
Relief Valve Service 7. Before operating the machine, check steering relief
pressure and adjust to 1250 psi. To adjust, remove cap,
1. Remove cap (Fig. 93, Item 30). Remove valve a
d- turn adjuster clockwise to increase pressure and coun-
juster (Item 28), spring
(Item 27), and ball (Item 26). terclockwise to decrease pressure. (See Steering Valve
and Steering Pump Test in Chapter 7 - Steering and
2. Remove gasket (Item 29) from cap. Brakes.
)
3. Inspect ball for burrs or roughness. Inspect relief Pump Service
valve bore and seat in cover. If the bore or seat is
damaged the cover must be replaced. 1. Plug ports and wash exterior of pump with cleaning
solvent.
4. Inspect spring for damage.
2. Draw a line across seam areas on pump case
with a
5. Clean and air dry all parts. Apply hydrauli
c oil to parts. scribe or marker to ensure proper reassembly.
Install ball, spring and valve adjuster.
IMPORTANT: Use caution when c
lamping in a vise
6. Install new
gasket on cap and install cap. to avoid distorting any parts.
Reelmaster
®
5100-D Page 4 - 59 Mowing Circuit Repairs
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