Toro 30856 Groundsmaster 4500-D Operator's Manual page 39

Test Port "B" (Fig. 40), located on side of counter balance
manifold, under operators seat. Used to measure the
counter balance pressure applied to cutting units for
increased traction.
Test Port "C" (Fig. 40), located on front of 2 wheel drive/4
wheel drive manifold through front access panel on
operator platform. Used to measure the 4 wheel drive
pressure applied to the rear axle (reverse mode) and rear
axle dynamic braking.
1
Figure 40
1. Test port "B" (Counter
balance)
Test Port "D" (Fig. 41), located on front of pump assembly,
under operators seat plate. Used to measure steering
pressure.
Test Port "E" (Fig. 41), located on front of pump assembly,
under operators seat plate. Used to measure lift circuit
pressure.
Figure 41
1. Test port "D" (Steering)
2
2. Test port "C" ( Four wheel
drive)
1
2
2. Test port "E" (Lift circuit)
39
Test Port "F" (Fig. 42), located on top of right hand deck
manifold. Used to measure cutting unit circuit pressure for
cutting units 5, 2 and 3.
Test Port "G" (Fig. 42), located on top of left hand deck
manifold. Used to measure cutting unit circuit pressure for
cutting units 1 and 4.
1
Figure 42
1. Test port "F" (Decks)
Test Port "H" (Fig. 43) located on rear traction circuit hard
line. Used to measure reverse traction pressure.
Test Port "I" (Fig. 43) located on front traction circuit hard
line. Used to measure forward traction pressure
Figure 43
1. Test port "H" (Reverse)
2
2. Test port "G" (Decks)
2
1
2. Test port "I" (Forward)