Manitowoc 999 Service And Maintenance Manual

Reference Only
Manitowoc Published 05-16-17, Control # 233-03 10-51
999 SERVICE/MAINTENANCE MANUAL TROUBLESHOOTING
10
Test 19 – Setting the Pump Pressure
To adjust multifunction valve:
1. Remove the protective cap from the multifunction valve
and loosen the lock nut.
2. Insert a hex wrench into multifunction valve adjusting
screw.
- Turning adjusting screw clockwise will increase
relief pressure.
- Turning adjusting screw counter-clockwise will
decrease relief pressure.
NOTE: The bypass hex nut is for special applications only
and must not be rotated during setting of pump
pressure without first consulting the pump
manufacturer literature.
Item Description Item Description
1 Multifunction Valve Adjusting Screw for Port “A” 3 Lock Nut
2 Multifunction Valve Adjusting Screw for Port “B” 4 Bypass Hex Nut
P1537 P1533
3
1
4
2
Pump Port Control Function
Pump Port A Port B
Travel Forward Reverse
Load Drum Hoist Lower
Boom Hoist Raise Lower
Swing Right Left
Multi-Function Valve
Bypass Hex
Lock Nut
A1161
Adjusting
Screw (Inside)
Plastic Cap
Wrench Sizes
Locking Nut Hex Wrench
Series 042 – 100 Units 19mm 4mm
Series 130 Units 13mm 5mm

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English