Main Relief Valve Rv3; Lift Relief Valve Rv2; Fore/Aft Tilt Steering Relief Valve Rv1; Counterbalance Valves - Snorkel SL26RTE Parts & Service Manual

MAIN RELIEF VALVE RV3

Refer to Figure 3-4 whiles reading the following procedures.
1. Operate the hydraulic system 10 to 15 minutes to warm the oil.
2. Remove the cap or loosen the locknut on the main relief valve.
3. Install a 0-250 bar (0-3500 psi) pressure gauge to the gauge port.
4. Select "Drive mode" and remove the wires from the forward/reverse drive coils.
5. While engaging the safety interlock trigger, move the joystick fully forward. Adjust the main
relief valve until the pressure gauge reads 210 bar (3000 psi).
6. Release the joystick.
7. Replace the cap or tighten the locknut on the main relief valve and torque to 8 Nm (6 ft. lbs.)

LIFT RELIEF VALVE RV2

Refer to Figure 3-4 whiles reading the following procedures.
1. Operate the hydraulic system for 5 minutes.
2. Remove the cap or loosen the locknut on the lift relief valve.
3. Install a 0-250 bar (0-3500 psi) pressure gauge.
4. With the keyswitch set to platform, select "lift mode". Lift the platform fully by moving the joy-
stick fully forward.
5. While holding the joystick forward, set the pressure to 180 bar (2600 psi) maximum by slowly
turning the adjustment screw. A clockwise turn increases pressure.
6. Tighten the locknut to 8 Nm (6 ft. lbs.).
7. Remove the gauge.
FORE/AFT TILT AND STEERING RELIEF VALVE RV1
Refer to Figure 3-4 whiles reading the following procedures.
1. Operate the hydraulic system for 5 minutes.
2. Remove the cap or loosen the locknut on the main relief valve.
3. Install a 0-100 bar (0-1450 psi) pressure gauge.
4. With the keyswitch set to platform, steer the wheels fully left or right using the steering buttons.
5. While holding the steering button, set the pressure to 100 bar (1450 psi) maximum by slowly
turning the adjusting screw. A clockwise turn increases pressure.
6. Tighten locknut to 8 Nm (6 ft. lbs.).
7. Remove the gauge.

COUNTERBALANCE VALVES

The counterbalance valves are not adjustable. If a suspected problem exists, a counterbalance
valve can be changed for one of the same specification.
SL26/30SL
SERVICE AND REPAIR
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