Operation and maintenance manual

Section 220-0090
SM 1391 5-98
3
SM - 536
Steering System - Steering Valve
Fig. 3 - Exploded View of Steering Valve Assembly
19 - 'O' Ring
20 - End Cover
21 - Washer
22 - Roll Pin
23 - Bolt
24 - Bolt
13 - Driveshaft
14 - Spacer
15 - 'O' Ring
16 - Distributor Plate
17 - Gear Wheel
18 - Gear Rim
7 - Bearing Assembly
8- Ring
9 - Spool
10 - Cross Pin
11 - Sleeve
12 - Neutral Position Spring
1 - Seal Ring
2 - Valve Housing
3 - Check Valve Ball
4- Bushing
5 - 'O' Ring
6 - Kin Ring
DISASSEMBLY
Numbers in parentheses refer to Figs. 1 & 3.
1. Place steering valve assembly in a soft jawed vice,
end cover (20) up.
2. Remove bolts (23 & 24) and washers (21) securing
end cover (20) to valve housing (2). Remove end
cover (20) from valve housing (2). Remove roll pin (22)
from bolt (23).
3. Remove gear rim (18), gear wheel (17) and spacer
(14) from valve housing (2). Remove and discard
'O' rings (19) from gear rim (18).
4. Remove driveshaft (13) from valve housing (2).
5. Remove distributor plate (16) from valve housing (2).
6. Unscrew and remove bushing (4) from valve
housing (2). Remove and discard 'O' ring (15) from
valve housing (2).
7. Remove valve housing (2) assembly from the vice
and shake out check valve ball (3).
8. Take care to keep cross pin (10) in sleeve (11) and
spool (9) horizontal. Cross pin (10) can be seen
through the open end of spool (9). Press spool (9)
inwards and remove with sleeve (11), ring (8) and
bearing assembly (7).
Note: The outer (thin) bearing race can sometimes
'stick' in valve housing (2). Ensure that bearing race
has been removed from valve housing (2).
9. Using bolt (23) and roll pin (22), press cross pin (10)