Every 50 Hours

Driveline

W21131-UN-18AUG10

Driveline-to-Gear Case End

W21132-UN-18AUG10

Driveline Middle

W21133-UN-18AUG10

Driveline-to-Tractor End

NOTE: 609 export driveline shown. 609 and 709 North American driveline is similar.

Tailwheel Bearings

W07434-UN-26MAY05

Tighten Gear Case Mounting Hardware

W15390-UN-11APR90

A - Wrench

B - Torque Wrench

CAUTION: Before servicing machine refer to LUBRICATING AND MAINTAINING MACHINE SAFELY at the beginning of this section.

IMPORTANT: Avoid structural damage caused by loose hardware. Tighten gear case hardware as specified. Check torque after first 8 hours of use and every 50 hours thereafter.

NOTE: Use an assistant to aid in tightening procedure.

Tighten gear case mounting hardware to specifications using a wrench (A), torque wrench (B), and a torque multiplier if necessary.

Item	Measurement	Specification
Mounting Hardware	Torque	350 N·m (258 lb.-ft.)

Tighten Blade Holder Hardware

W09184-UN-05DEC07

A - Piece of Pipe

B - Torque Multiplier

C - Torque Wrench

D - Hole

E - Cotter Pin

F - Washer, 37 x 67 x 6

G - Nut, M36

IMPORTANT: Operating with a loose blade holder can damage the splined connection. To ensure proper seating between the blade holder and output shaft, two initial tightenings are required. Retighten after one hour and again after the first day of operation. In severe cutting conditions, check torque every 50 hours.

1. Remove and discard existing cotter pin (E).

2. Verify washer (F) and M36 nut (G) are installed as shown. Tighten nut to specification using a torque wrench (C), torque multiplier (B), and a long piece of pipe (A). Position pipe into a corner of the machine.

   Item	Measurement	Specification
   Cap Screw	Torque	610 N·m (450 lb.-ft.)

3. NOTE: Verify slots in nut (G) are aligned with hole (D) in shaft after tightening to specified torque. If necessary, tighten nut slightly more to align slots with hole.

   Install NEW cotter pin (E).