DRESSTA TD-25M EXTRA, Service Manual

Page: 246 / 595

SECTION 7E
STEERING DRIVE
Page 34
TD-25M EXTRA DRESSTA
TWO SPEED STEERING VALVE
12. REASSEMBLY
Hi-Lo Valve (Refer to Fig. 7E.35)
1. Install nozzles (5) in the valve housing (1). If removed, install plugs (4) and clip (6).
2. Install a new seal kit to the solenoid valve (2) body. Install the solenoid valves (2) bodies
to the valve housing (1). Torque the solenoid valve bodies to 44 56 [Nm]. Install the
solenoid coils on valve (2) bodies and torque them to 5 7 [Nm].
3. Install a new seal kit to the sequence valve (3). Install the sequence valves (3) to the valve
housing (1). Torque the sequence valve bodies (3) to 45 50 [Nm].
Lower Steering Valve (Refer to Fig. 7E.34)
4. Install the spring spacers (6) and spring seats (5) on valve spools (4).
5. Install the spool springs (7) on front end of spools (4) and slide spool into front of valve
housing (1).
6. Install new O-rings (9) on plugs (8) and install them into front of valve housing (1).
7. Install the front cover (3) using cover bolts until the cover (3) rests against the valve
housing (1).
8. Reinstall the Hi-Lo valve (2) with gasket (10) at the rear of lower steering valve housing (1).
Upper Steering Valve (Refer to Fig. 7E.33)
NOTE: If replacement of housing balls (8 and/or 9) are required, press the new ball 0,25-0,75 [mm]
below the surface of housing (1).
9. Apply LOCTITE PIPE SEALANT to the threads of port plugs (4) and the hose fittings (if
removed) and install the plugs and fittings in the top of housing (1).
10. Install the check balls (7) into the housing (1) bores. Coat the check ball body (6) threads with
LOCTITE #262 and install into the housing (1). Torque the check ball bodies (6) to 32 [Nm].
11. Install new O-rings (22 and 25) to left and right pilot tubes (21). Install the pilot tubes into the
valve housing (1).
12. If removed, install dowel pins (27) in pilot tubes (21)
13. Install the spring washer (14) and inner spool spring (15) over brake spool (13).
14. Install the inner spring stop (16), spring spacer (17), outer spring stop (18) and outer spool
spring (24).
15. Install the wiper seal (20) and the inner (23) and outer (22) O-rings to the end cap (19).
Reinstall the end cap (19) with seals to the brake spool (13).
16. Reinstall the brake spool (13) with mounted parts into the valve housing (1).
17. Install the front cover (5) to the housing (1). Compress the spring tension and secure the front
cover (5) with bolts.
18. Reinstall metering spool sleeves (30) into valve housing (1).
19. Lightly lubricate metering spools (26) and install them into sleeves (30) with the rifle, drilled
hole positioned toward the rear of the housing (1).
20. At the end of brake spool (13) install the spool poppet (12) with originally removed shims (11).
Install the spool spring (10) toward the rear of the housing (1).
21. Prior to installation of rear cover (2), verify metering spools (26) move freely in spool sleeves
(30). Use a new gasket (3) and secure rear cover (2) to housing (1).