Toro Greensmaster 3250-D 04383, Руководство по обслуживанию

Страница: 158 / 308

Greensmaster 3250--D Hydraulic System (Rev. I) Page 4 -- 120
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 capscrew.
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. 90).
8. Before reattaching cover plate, test leak detector
switch with ignition key switch in ON/RUN position. The
buzzer should sound with toggle switch held down for 1
second.
9. If the buzzer fails to sound, check to see if the igni-
tion key switch is in ON/RUN position, all connections
are secure, and the test switch is held for 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 cap screws and flat washers (Fig. 90).
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.
90).
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. 88)
1. The leak detector can be disassembled using the
leak detector assembly drawing (Fig. 88) 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. 88)
1. Coat all O--rings with clean hydraulic oil.
2. Secure sight gauge (34) and new O--ring (28) to the
leak detection tank (11). Torque gauge from 100 to 125
in--lb (11.3 to 14.1 N--m) .
3. Secure both hydraulic barb fittings (6) and new O--
rings (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 (14)
to tank with two grommets (32), flat washers (31), and
cap screws (30). Torque both screws from 30 to 60 in--lb
(3.4 to 6.8 N--m) .
5. Secure formed inlet hose (26) to the hydraulic barb
fitting (6) attached to the end of the tank with hose clamp
(16). Secure formed outlet hose (15) to the hydraulic
barb fitting (6) attached to the inner side of the tank with
hose clamp (16).
6. Secure both hydraulic barb fittings (27) and O--rings
(28) to the valve assembly (18). Secure oil level sensor
(23) and O--ring (24) to the assembly. Secure cartridge
valve with O--ring (25) to assembly. Hand tighten plug
(29) and O--ring (28) to the assembly.
7. Position valve assembly (18) under the mounting
bracket (14). Insert four cap screws (12) with two flat
washers (13) and two idler washers (17) through the
bracket and assembly. Hand tighten four M8--1.25 lock
nuts to the cap screws.
8. Secure toggle switch (35) to cover plate (4) with nut,
then secure toggle switch boot (37) to switch. Secure
audio alarm (5) to plate with cap. Secure delay timer (3)
to the plate with clamp (1), socket head screw (38), and
lock nut (2).
9. Connect leak detector harness to the following:
A. The connector with red and black wires to the
delay timer (3).
B. The black/white and black wires to the negative
terminal of the audio alarm (5). Connect red and yel-
low wires to the positive terminal.
C. The black and gray wires to the negative termi-
nal of the toggle switch (35). Connect red and yellow
wires to the positive terminal.
D. The red/white and red wires to the positive termi-
nal of the valve solenoid (18). Connect black wires
to the negative terminal.
E. The connector with yellow and gray wires to the
oil level sensor (23).
10. Verify leak detector operation (see Leak Detector in
Chapter 7 -- Electrical System).