Toro 04384 Service Manual page 138

IMPORTANT: Do not over tighten cap screw.
Threads in tank may become damaged.
6. Locate plugged 2--pin connector with yellow/orange
and black wires in main tractor harness. Attach leak de-
tector harness. Secure leak detector harness to under-
side of leak detection tank with R--clamp and cap screw.
7. Remove plug from top of the valve assembly. Care-
fully fill float cavity to the top of the threads. Replace and
tighten fill plug. Clean up any spilled oil (Fig. 76).
8. Before attaching cover plate, test leak detector
switch with ignition key switch in ON/RUN position. The
buzzer should sound with toggle switch held down for
one (1) second.
9. If the buzzer fails to sound, check to see if the ignition
key switch is in ON/RUN position, all connections are
secure and the test switch is held for one (1) full second.
IMPORTANT: Do not over tighten cap screws.
Threads in tank may become damaged.
10.Secure cover plate and cap tether to the leak detec-
tion tank with five (5) cap screws and flat washers (Fig.
76).
NOTE: Monitor hydraulic fluid level in sight glass and as
air is removed from the hydraulic circuit, auxiliary tank
may need to be topped off after initial fill.
11. Fill leak detection tank to the top of sight gauge (Fig.
76).
IMPORTANT: If a leak occurs or oil is removed from the
hydraulic system for service, the lost oil must be re-
placed. If a large amount of oil is lost, remove leak detec-
tion tank cover plate and follow steps 7 through 11 for
refilling instructions. For small amounts of oil, simply
add oil to auxiliary tank.
Disassembly and Inspection (Fig. 74)
1. The leak detector can be disassembled using the
leak detector assembly drawing (Fig. 74) as a guide.
2. Clean tank and filler screen with solvent. Inspect
parts for the following:
A. Leaking, cracked or damaged leak detection
tank.
B. Worn or leaking hydraulic hoses. Replace if nec-
essary.
C. Visibly worn or damaged parts.
Assembly (Fig. 74)
1. Coat all O--rings with clean hydraulic oil.
Hydraulic System
2. Secure sight gauge (item 34) and new O--ring (item
28) to the leak detection tank. Torque gauge from 100 to
125 in- -lb (11.3 to 14.1 N- -m).
3. Secure both hydraulic barb fittings (item 6) and new
O--rings (item 7) to the leak detection tank. Torque both
fittings from 17 to 21 ft- -lb (23 to 28 N- -m).
4. Apply antiseize lubricant to threaded holes on bot-
tom of leak detection tank. Secure mounting plate (item
14) to tank with two (2) grommets (item 32), flat washers
(item 31) and cap screws (item 30). Torque both screws
from 30 to 60 in- -lb (3.4 to 6.8 N- -m).
5. Secure formed inlet hose (item 26) to the barb fitting
(item 6) attached to the end of the tank with hose clamp.
Secure formed outlet hose (item 15) to the hydraulic
barb fitting (item 6) attached to the inner side of the tank
with hose clamp.
6. Secure both hydraulic barb fittings (item 27) and O--
rings to the valve assembly (item 18). Secure oil level
sensor (item 23) and O--ring to the assembly. Secure
cartridge valve (item 25) and O--ring to assembly. Hand
tighten plug (item 29) and O--ring to the assembly.
7. Position valve assembly (item 18) under the mount-
ing bracket (item 14). Insert four (4) cap screws (item 12)
with two (2) flat washers (item 13) and two (2) idler wash-
ers (item 17) through the bracket and assembly. Hand
tighten four (4) lock nuts to the cap screws.
8. Secure toggle switch (item 35) to cover plate (item 4)
with nut, then secure toggle switch boot (item 37) to
switch. Secure audio alarm (item 5) to plate with cap.
Secure delay timer (item 3) to the plate with clamp (item
1), socket head screw (item 38) and lock nut (item 2).
9. Connect leak detector harness to the following:
A. The connector with red and black wires to the
delay timer (item 3).
B. The black/white and black wires to the negative
terminal of the audio alarm (item 5). Connect red and
yellow wires to the positive terminal of the alarm.
C. The black and gray wires to the negative terminal
of the toggle switch (item 35). Connect red and yel-
low wires to the positive terminal or the switch.
D. The red/white and red wires to the positive termi-
nal of the solenoid valve coil (item 18). Connect black
wires to the negative terminal.
E. The connector with yellow and gray wires to the
oil level sensor (item 23).
10.Verify leak detector operation (see Leak Detector in
Chapter 5 -- Electrical System).
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