14 – 8 Repair Manual RRE140/160/180/200/250 © BT
Hydraulic system 6000
Main valve (6210)
T-code Valid from serial number Date Publication No.
815, 816 6051502 2008-08-21 261828-040
14.2.2 Replacing the complete main valve
block
The main valve block contains:
• Proportional slide valves that are individually matched and cannot
be replaced
• Proportional valves of replacable cartridge design
In the event of defects in the non-replacable valves, the entire main
valve block must be replaced.
IMPORTANT:
On delivery of a complete main valve block, it is adjusted for a 2.0 ton
mast.
For trucks with 2.0 ton masts, only calibration of opening points of
Q4/Q5 is normally required.
For other masts, both calibration of opening points and adjustment of
maximum opening points are required.
1. Extend the reach carriage fully.
2. Make sure the forks are in their bottom position and that there is no
load affecting the mast.
3. Put the truck in service mode and go to pressure equalisation posi-
tion in the service menu. All the valves are opened slightly and any
residual pressure in the system is equalised.
4. Switch off the truck and withdraw the battery cut out connector.
5. Undo the two screws (8 mm allen screws) that hold the protective
plate over the main valve in the reach carriage, and remove the
plate.
6. Remove all the hoses from the main valve. Mark them to facilitate
assembly.
Valve Function Type
Q2 Main lift – lift Replacable cartridge
Q3 Free lift – lift Replacable cartridge
Q4 Main lift – lower Replacable cartridge
Q5 Free lift – lower Replacable cartridge
Q6 Reach in Non-replacable slide
Q7 Reach out Non-replacable slide
Q11 Ergo: Cabin tilt – up Non-replacable slide
Q21 Ergo: Cabin tilt – down Non-replacable slide
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