Textron Jacobsen HR-5111, Technical/Repair Manual

Page: 374 / 423

8-18 4203780 First Edition
CUTTING UNITS
8
NOTICE
6. Clean all parts using clean solvent, and dry using
compressed air.
7. Inspect all parts for wear or damage. Replace the
motor as a unit if any parts other than seals require
replacement.
Inspect for metal chips or slivers during cleaning (an
indication of damage to motor or other hydraulic
components).
Assembly Notes
NOTICE
• Assemble the deck motor by reversing the order of
disassembly.
• Apply a coat of clean hydraulic oil to all parts to aid
assembly.
• Use extreme care when installing shaft seal; it must
seat squarely in seal bore. Use clean grease that
meets or exceeds NLGI Grade 2 LB specifications on
shaft and seal. Use caution when inserting shaft into
seal to avoid cutting or damage to seal during
assembly.
• Install screws finger-tight and rotate drive shaft to
make sure it turns freely. Tighten screws evenly in
steps to a final torque of 30 lb-ft (40 N·m).
Blade
Removal and Installation
See Figure 8-8.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Raise and support the cutting units. (Refer to “Safety,
Operation, and Maintenance Manual.”)
3. Disconnect the negative (–) battery cable at the
battery.
Figure 8-8
!
CAUTION
4. Remove blade screw (8), lock washer (9), blade (1),
and key (6) from hydraulic motor spindle (5).
5. Remove two adapter screws (7), lock washers (2),
nuts (3), and blade adapter (4) from blade (1). Repair
or replace blade as necessary.
Installation Notes
• Install blade by reversing the order of removal.
• Tighten adapter screws (4) to 35–40 lb-ft (47–54
N·m).
• Tighten blade screw (5) to 75 lb-ft (100 N·m).
It is important that all motor parts are absolutely
clean, as contamination can result in serious
damage and/or improper operation.
Never use shop towels or rags to dry parts after
cleaning, as lint may clog passages. Dry parts
using compressed air.
It is important that all motor parts are absolutely
clean, as contamination can result in serious
damage and/or improper operation.
Never use shop towels or rags to dry parts after
cleaning, as lint may clog passages. Dry parts
using compressed air.
Required Materials
Seal Kit (Jacobsen P/N 557519)
Blades are extremely sharp and can cause severe
injury.
TN1830
1
8
4
6
7
7
5
9
3 2