Piston (Traction) Pump Flow Test (Using Tester With Pressure Gauge & 40 Gpm Flow Meter) - Toro Groundsmaster 5900 Series Service Manual

Piston (Traction) Pump Flow Test (Using Tester with Pressure
Gauge & 40 GPM Flow Meter)
TO FRONT DECK
MANIFOLD
P1 PORT
10.6 GPM
TO LEFT DECK
MANIFOLD
P1 PORT
21.7 GPM
21.7 GPM
1.03 CID 2.11 CID 2.11 CID
FROM HYDRAULIC
RESERVOIR
FROM RETURN
FILTER
FROM HYDRAULIC
RESERVOIR
g287750
Groundsmaster ® 5900 & 5910
16227SL Rev B
S2
0.032" 0.032"
M5
4.15 CID
M4
TRACTION PUMP
The piston (traction) pump flow test measures piston pump output (flow) in high
range (transport). During this test, pump load is created at the flow meter using
the adjustable load valve on the tester.
At normal engine high idle speed, traction circuit flow for the
Groundsmaster 5900/5910 exceeds 150 LPM (40 GPM). For this test,
use 40 GPM Hydraulic Tester #AT40002 (pressure and flow) and
Hydraulic Hose Kit (see
that engine speed is adjusted as described in the following test
procedure. If engine is run at normal high idle speed while testing,
hydraulic tester damage will likely occur.
Note: Two people will be required to complete the following test procedure.
Note: Before performing piston pump flow test, make sure that traction speed
limit is set to 100% in forward transport mode using the InfoCenter settings menu.
TO STEERING/DECK LIFT
MANIFOLD PORT P1
FROM STEERING/DECK LIFT
MANIFOLD CH2 PORT
M14
S1
E
5080
PSI
5080
PSI
290
PSI
L 2 L4 M 3
AM3
Figure 55
IMPORTANT
Special Tools (page
Page 5–47
P1
MA
42.7 GPM
A
FORWARD
ENGINE RATED
SPEED: 2530 RPM
P2
B REVERSE
MB
TO TRACTION
MANIFOLD
CH PORT
2–15)) and make sure
Hydraulic System: Testing
TRACTION
MANIFOLD