9
PUMP NEUTRAL ADJUSTMENT
(continued)
PUMP PORT LOCATION
2000
Location of Pump Ports.
7.
If the transmission operates as indicated by motor shaft
rotation, reduce speed to idle. Using a 3 mm internal hex
wrench, slowly turn the null adjustment screw clockwise
or counterclockwise until the transmission does not
operate. Repeat step 6. Note that charge pressure
should drop with forward or reverse stroking of the pump
swashplate due to the shifting of the shuttle valve in the
motor manifold. Slowly turn the null adjustment screw
clockwise until charge pressure decreases.
8.
With a 3 or 4 mm (4 mm units built after April 95) internal
hex wrench, slowly turn the null adjustment screw
counterclockwise, observing the wrench angle rotation,
until charge pressure decreases again (charge pressure
will rise in neutral and drop when going into stroke).
9.
Turn the adjustment screw clockwise half the amount of
CUSTOMER SERVICE
NORTH AMERICA
ORDER FROM
Danfoss (US) Company
Customer Service Department
3500 Annapolis Lane North
Minneapolis, Minnesota 55447
Phone: (763) 509-2084
Fax: (763) 559-0108
DEVICE REPAIR
For devices in need of repair or evaluation, include a
description of the problem and what work you believe
needs to be done, along with your name, address and
telephone number.
RETURN TO
Danfoss (US) Company
Return Goods Department
3500 Annapolis Lane North
Minneapolis, Minnesota 55447
EUROPE
ORDER FROM
Danfoss (Neumünster) GMBH & Co.
Order Entry Department
Krokamp 35
Postfach 2460
D-24531 Neumünster
Germany
Phone: 49-4321-8710
Fax: 49-4321-871355
the turn observed in step 8. This should be the center of
neutral.
10. Hold the adjustment screw and securely tighten the hex
lock nut on the adjustment screw to 14-18 foot-pounds.
Note that if a motor is used that does not have a manifold,
neutral should be adjusted (steps 8 - 10) by observing
the motor shaft rotation without a load.
11. Stop the prime mover.
12. Reconnect the electrical signal source.
13. Run the system briefly to ensure that it operates
proportionally on both sides of null. Swashplate
movement can be verified by watching motor shaft
rotation without a load.
CASE DRAIN
CHARGE PRESSURE
GAUGE PORT
BLN-95-8995-4
