Maintenance
Belt Replacement
and
Pump Drive Belt
Replacement
sections for belt replacement.
Change Gearbox Oil
Service Interval: After the first 50 hours
Every 2,000 hours
thereafter
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Place unit on a level surface.
3. Remove the gearbox and drive shaft assembly
from the mower deck. Retain hardware for re-use.
4. Remove the large oil drain plug on the front of
each of the three gearbox sections and drain oil
(Figure 20).
Figure 20
1.
Small magnetic plugs
(front and back)
3.
Small magnetic plug
(front only)
2.
Large oil drain/fill plug
5. Remove small magnetic plugs and wipe away any
material accumulated on the plugs.
6. Apply a Teflon pipe sealant to all small magnetic
plugs and re-install into the gearbox.
7. Re-install the gearbox and drive shaft assembly
to the mower deck.
8. Fill gearbox with Mobil SHC (synthetic) 75W-90
gear lube oil until level with oil drain/fill plug.
Each of the gearbox sections must be filled
separately.
Note:
Mower deck should remain level to the
ground when filling gearbox with oil. Do Not fill
gearbox with deck raised in the service position.
9. Apply a Teflon pipe sealant to the 3 large oil plugs
and re-install into the gearbox.
Check Gearbox Oil
Service Interval: Every 100 hours
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Place unit on a level surface.
3. Add oil as needed until level with oil drain plug;
see
Change Gearbox Oil
section.
Lubricate Grease Fittings
Note:
See chart for service intervals.
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Lubricate fittings with one to two pumps of
NLGI grade #2 multi-purpose gun grease.
Refer to the Lubrication Chart for fitting locations
and lubrication schedule.
Lubrication Chart
Fitting
Locations
Initial
Pumps
Number of
Places
Service
Interval
1. Caster
Pivot
*0
3
*Yearly
2. PTO
Idler
1
1
Yearly
3. Pump
Idler
1
1
Yearly
4. Rear
Caster Hub
*0
1
*Yearly
5. Drive
Shaft
1
3
40 Hours
6. Front
Caster
Wheel Hub
1
2
8 Hours
7. Deck
Flip-Up
1
4
100 Hours
8. Push
Arm Tubes
1
2
100 Hours
9. Front
Caster
Pivots
*0
2
*Yearly
* See step 3 for special lubrication instructions on
the front and rear caster pivots and the
Lubricate
Rear Caster Wheel Hubs
section for special
lubrication instructions on the rear caster wheel
hubs.
36
Summary of Contents for NAVIGATOR
Page 1: ...NAVIGATOR For Serial Nos 400 000 000 Higher Part No 4503 256 Rev A ...
Page 52: ...Schematics Schematics Electrical Diagram All Units Except Kohler EFI 52 ...
Page 53: ...Schematics Electrical Diagram Kohler EFI 53 ...
Page 54: ...Schematics Electrical Schematic All Units Except Kohler EFI 54 ...
Page 55: ...Schematics Electrical Schematic Kohler EFI 55 ...
Page 56: ...Schematics Hydraulic Diagram 56 ...
Page 58: ...58 ...
