Toro Multi Pro 1200 - Spray Pro Set-Up; Unit Modes and Calibration Value Settings

Multi Pro 1200/1250Hydraulic System Page 4 -- 24
Steering Pump Service
1. Retaining ring
2. Shaft seal
3. Spacer
4. Ball bearing
5. Check ball
6. Spring
7. Spring
8. Adjusting screw
9. Gasket
10. Cap
11. Key
12. Crescent ring (4 used)
13. Woodruff key
14. Drive shaft
15. Needle bearing (4 used)
16. Plug
17. Screw (8 used)
18. Gear housing
19. Idler gear
20. Drive gear
21. Idler shaft
22. Gasket
23. Dowel pin (2 used)
24. Stator
Figure 21
39
4
10
15
21
16
22
5
11
6
12
17
23
18
24
1
7
2
8
13
19
14
20
12
12
15
114 to 150 in--lb
(13to17N--m)
144 to 180 in--lb
(16to20N--m)
Before performing any service on gear pump, plug
ports, wash exterior of pump with c leaning solvent and
dry pump thoroughly.
Relief Valve Service ( Fig. 21)
1. Remove cap (item 10). Remove and discard gasket
(item 9) from cap.
NOTE: Count number of turns it takes to unthread ad-
justing screw so it can be r einstalled for the same
approximate relief pressure setting.
2. Remove adjusting screw (item 8), springs (items 6
and 7) and check ball (item 5).
3. Inspectcheckballforburrsorroughness.Inspectre-
liefvalvebore and seatinsidepumpstator (item 24).In-
spect springs for damage. Replace any worn or
damaged parts.
4. Clean and dry relief valve parts. Apply clean Dexron
III ATF to valve parts.
NOTE: Installadjustingscrewsamenumberofturnsas
countedduring removalfor thesameapproximaterelief
pressure setting.
5. Install check ball (item 5), springs (item 6 and 7) and
adjusting screw (item 8). Position small end of springs
against check ball.
6. Installnewgasket(item9)and cap(item10).Torque
cap from 144 to 180 in--lb (16 to 20 N--m).
7. Check pump relief pressure (see Steering Pump
Flow and Relief Pressure in the Testing section of this
chapter). If adjustment is needed, tighten adjusting
screw to increase relief pressure or loosen adjusting
screw to reduce relief pressure.