Jacobsen AR-3 User Manual

6-48 4181384 First Edition
HYDRAULICS
6
Assembly Notes
NOTICE
• Assemble lift valve by reversing the order of removal.
• Lubricate all O-rings prior to assembly.
• Tighten the primary weight transfer (9), secondary
weight transfer (10) and raise/lower (6) solenoid
valves to 22 lb-ft (30 N·m).
• Tighten all solenoid coils (1) to 3 lb-ft (36 lb-in.)
(4 N·m).
• Tighten the relief valve (2) to 37 lb-ft (50 N·m).
• Tighten check valve (7) to 30 lb-ft (40 N·m).
• Tighten orifice plug (4) to 2 lb-ft (27 lb-in.) (3 N·m).
• Tighten hollow hex plugs (3) to 5 lb-ft (58 lb-in.)
(6.5 N·m).
Flushing Valve
Removal and Installation
See Figure 6-43.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-7.)
2. Drain hydraulic oil.
Figure 6-43
NOTES
• Label hydraulic hoses before disconnecting to ensure
correct installation.
• Close all openings with caps or plugs to prevent
contamination.
3. Disconnect hydraulic hoses (1, 2, 7, 8, 13, and 15).
4. Remove two screws (12), lock washers (11), and flat
washers (10) and spacers (6), and remove flushing
valve (5) from mower.
NOTE
Record the location and orientation of fittings on lift valve
to ensure correct installation.
5. Remove fittings (3, 4, and 9) from flushing valve (5).
Installation Notes
• Install flushing valve by reversing the order of
removal.
• Ensure new O-rings are in place before installing
hoses on fittings.
• Replace hydraulic filter.
• Refill hydraulic tank. (Refer to “Safety, Operation, and
Maintenance Manual” for oil specifications.)
• Start engine and check flushing valve operation.
Check for leaks and repair as necessary.
It is important that all components 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, Raise/Lower Solenoid Valve
(Jacobsen P/N 4137264)
Seal Kit, Secondary Weight Transfer Solenoid Valve
(Jacobsen P/N 4137265)
Seal Kit, Primary Weight Transfer Solenoid Valve
(Jacobsen P/N 4137266)
Seal Kit, Check Valve (Jacobsen P/N 4137267)
Seal Kit, Pilot Piston (Jacobsen P/N 4137268)
Seal Kit, Relief Valve (Jacobsen P/N 4137269)
TN1234
8
15
6
1
2
3
14
13
12
11
10
4
9
7
5

Jacobsen AR-3 Specifications

General

Brand	Jacobsen
Model	AR-3
Category	Lawn Mower
Language	English