TM 5-3805-281-24-1
Tests
SPECIFICATIONS
Maximum Flow Adjusting Screw (B):
Turning adjusting screw IN decreases maximum pump
Pump Speed to Engine Speed
0.95
Ratio
flow rate.
Engine Speed
2050 rpm
Pump Regulator Maximum Flow Adjusting Screw--Specification
Pump Speed
1947 rpm
Pump Regulator Maximum
1/4 turn IN decreases
Turn.................................................................. 1/4 turn IN decreases
Flow Adjusting Screw Turn
maximum pump flow rate
maximum pump flow rate
approximately 18.5 L/min (4.9
approximately 18.5 L/min (4.9
gpm)
gpm)
Pump Regulator Flow Adjusting
1/4 turn IN decreases pump
Cartridge (Track Cycle Time)
flow rate approximately 31.6
Do not turn adjusting screw in more than two turns.
Turn
L/min (8.3 gpm)
Tighten 13 mm nut (A) after adjustment. Maximum flow
Pump Regulator Minimum Flow
1/4 turn IN increases minimum
adjusting screw must not be turn out to try to increase
Adjusting Screw Turn
pump flow rate approximately
pump flow rate except after the adjustment of flow
15.2 L/min (4.0 gpm)
adjusting cartridge (C). For adjustment, see Hydraulic
Pump Regulator Load Adjusting
1/4 turn IN increases pump flow
Pump Regulator Test and Adjustment--Maximum Flow
Screw (Inner Spring) (Engine
rate approximately 6.9 L/min
in this group.
Pulldown at High Pressure)
(1.8 gpm)
Turn
Flow Adjusting Cartridge (Track Cycle Time) (C):
Regulator Load Adjusting
1/4 turn IN increases pump flow
Turning adjusting cartridge IN decreases pump flow
Cartridge (Outer Spring)
rate approximately 36.7 L/min
rate.
(Engine Pulldown at Medium
(9.7 gpm)
Pressure) Turn
Pump Regulator Flow Adjusting Cartridge (Track Cycle
Time)--Specification
The pumps are driven at 0.95 times engine speed. The
approximate flows given are with the engine speed at
Turn........................................................ 1/4 turn IN decreases pump
2050 rpm and the pump speed at 1947 rpm.
flow rate approximately 31.6
L/min (8.3 gpm)
9025
Pump Speed to Engine Speed--Specification
25
Do not turn adjusting cartridge more than one turn.
102
Ratio.............................................................................................. 0.95
Tighten 30 mm nut (D) after adjustment. When flow
adjusting cartridge (C) is turned in or out the maximum
Engine--Specification
flow rate for the pump also changes. To maintain the
pump's maximum flow rate, turn maximum flow
Speed.................................................................................... 2050 rpm
adjusting screw (B) out twice as much as flow
Pump--Specification
adjusting cartridge (C) is turned in; turn maximum flow
adjusting screw (B) in twice as much as flow adjusting
Speed.................................................................................... 1947 rpm
cartridge (C) is turned out.
IMPORTANT: Random adjustment will cause
For adjustment, see Hydraulic Pump Regulator Test
engine and hydraulic systems
and Adjustment--Maximum Flow in this group.
malfunctions. See Pump Regulator
Tests and Adjustment for Minimum
Flow, Maximum Flow and Engine
Pulldown in this group.
Continued on next page
CED,TX08227,3140
1927MAY982/3
6-249