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TEST HOOK UP NO. 3
Reel Drive Pump Efficiency
TESTER CONNECTION:
Tester in series between reel pump outlet hose on suspected bad section and its valve bank
fitting. Section being checked should be one that supplies oil for reel unit not operating
properly.
(Tester Flow Control Open)
CAUTION: Keep everyone away from the front of the machine during reel
system tests. Operator must be on seat or the safety interlock will stop the
engine when the mow pedal is engaged.
TEST A: REEL DRIVE PUMP EFFICIENCY
PROCEDURE
Traction lever in neutral position.
Engine RPM 2800.
Hydraulic oil at operating temperature.
While watching pressure gauges, slowly close flow control valve until 1000 PSI is
obtained. Read flow gauge.
TESTER READINGS
Flow not less than 2.5 GPM at 1000 PSI.
If unable to get 1000 PSI or flow is below 2.5 GPM, check for restriction in intake line to
reel drive pump. If not restricted, remove pump and repair as necessary.
TESTER
Testing Page 4 - 32 Greensmaster
®
3100
GR3100 WITH DANFOSS PUMP SHOWN.
MACHINES WITH PARKER PUMP USE
CENTER 3 PUMP SECTIONS FOR REEL
DRIVE CIRCUITS.
Rev. E