Maintenance
Note: Hydraulic reservoir can be pressurized up to 5 psi to speed this process.
6.If either drive wheel still does not rotate, stop and repeat steps 4 and 5 above for the respective pump. If wheels rotate slowly, the system may prime after additional running. Check oil level as stated in Check the Engine Oil Level section.
7.Allow unit to run several minutes after the charge pumps are “primed” with drive system in the full speed position. Check oil level as stated in Check the Engine Oil Level section.
8.Check hydro drive linkage adjustment as stated in Hydro Drive Linkage Adjustment section in Adjustments.
Wheel Hub-Slotted Nut Torque Specification
Service Interval: After the first 100 hours
Every 500 hours thereafter
When tightening the slotted nut on the wheel motor tapered shaft:
1.Torque the slotted nut to 100
2.Further tighten the nut until the next set of slots line up with the cross hole in the shaft.
3.Replace cotter pin.
Note: Do not use
Thread Locking Adhesives
Thread locking adhesives such as “Loctite 242” or
•Pump sheave setscrews.
•Square head setscrews on hydro pump control arms.
•OPC lever setscrews.
•Shoulder bolts in ends of speed control crank.
•Sheave retaining bolt in end of engine crankshaft.
•Fuel tank bulkhead fitting threads
Adhesives such as “Loctite RC/609 or RC/680” or
•OPC lever hubs and
Note: Care must be used not to bond the bearing, next to each OPC hub, to the
•Fuel tank studs, where studs are inserted into tank.
Mobil HTS Grease (Or Food-Grade Anti-seize)
Mobil HTS grease (or
•Between the cutter housing spindle and bearings.
•Between the cutter housing spindle and sheave.
•Under top cutter housing bearing guard.
Copper-Based Anti-seize
Between the blade drive and pump drive sheaves and engine crankshaft.
Dielectric Grease
Dielectric grease is used on all blade type electrical connections to prevent corrosion and loss of contact.
26
