Service Manual

Rev. A
Groundsmaster 4500−D/4700−DPage 3 − 18Yanmar Diesel Engine
13.Plug all radiator/oil cooler and hose openings to pre-
vent contamination.
14.If necessary, remove draincock (item 7 in Fig. 12),
plug (item 6 in Fig. 12) and hydraulic plug (item 8 in Fig.
12) from radiator/oil cooler.
15.If hydraulic fittings (item 3 in Fig. 12) are to be re-
moved from oil cooler, mark fitting orientation to allow
correct assembly. Remove fittings from cooler and dis-
card O−rings.
Installation (Fig. 10)
1. If hydraulic fittings (item 3 in Fig. 12) were removed
from oil cooler, lubricate and place new O−rings onto fit-
tings. Install fittings into oil cooler openings using marks
made during the removal process to properly orientate
fittings. Tighten fittings (see Hydraulic Fitting Installation
in the General Information section Chapter 4 − Hydraulic
System).
2. If hydraulic plug (item 8 in Fig. 12) was removed from
oil cooler, place new O−ring on plug and install into oil
cooler port.
3. If draincock (item 7 in Fig. 12) or plug (item 6 in Fig.
12) were removed from radiator, apply thread sealant
and install draincock and plug into radiator openings
(Fig. 12).
4. Remove plugs placed in radiator and hose openings
during the removal procedure.
5. Carefully position radiator/oil cooler to the radiator
mount. Make sure that spacers (item 32) are positioned
in hood seals. Secure radiator/oil cooler and recircula-
tion barriers (items 24 and 25) in place with four (4)
flange head screws and flange nuts.
6. Position lower radiator shroud to radiator/oil cooler.
Install fasteners to secure lower shroud to radiator. Do
not fully tighten fasteners until after engine cooling fan
motor, fan and upper shroud are installed.
7. Install engine cooling fan motor and bracket as-
sembly, cooling fan and upper radiator shroud to ma-
chine (see Engine Cooling Fan Motor in the Service and
Repairs section of Chapter 4 − Hydraulic System). Make
sure that clearance between shrouds and fan is at least
0.180” (4.6 mm) at all points. Also, make sure that all
fasteners for radiator shrouds are fully tightened.
8. Connect reservoir hose (item 39) to the radiator vent
tube.
9. Connect upper and lower radiator hoses to the radi-
ator and secure with hose clamps.
10.Remove caps or plugs from hydraulic hoses and fit-
tings that were placed during disassembly. Connect hy-
draulic hoses to oil cooler fittings (see Hydraulic Hose
and Tube Installation in the General Information section
of Chapter 4 − Hydraulic System).
11. Install plenum assembly (item 5) to crossover plate
and secure with flange head screws and flange nuts.
12.Install air cleaner intake hose (item 8) to the air clean-
er and plenum.
13.Make sure that radiator draincock is closed. Fill ra-
diator with coolant.
14.Check and adjust hydraulic oil level in hydraulic
reservoir.
15.Start engine. Check for fluid leaks and proper engine
operation.
16.After running engine for a short time, stop engine and
make sure radiator and hydraulic reservoir are full. Add
correct fluids if necessary.
17.Install hood on the machine (see Hood Installation in
the Service and Repairs section of Chapter 7 − Chas-
sis).