SECTION 6 - MAST COMPONENTS
6-14
– JLG Lift –
3121222
Figure 6-16. 1230ES Lift Cylinder Internal Components - Lower End
1.
Extend Port (a)
2.
Return Port
3.
Proportional Lift Selenoid (b)
4.
Valve Port Block (c)
5.
O-Ring Seal
6.
Cyl. #1 - Rod Wiper Seal
7.
Cyl. #1 - Gland (d)
8.
Cyl. #1 - Main Seal
9.
Cyl. #1 - Gland Wire Retaining Ring
10.
Cyl. #1 - O-Ring Seal
11.
Cylinder Joint
12.
Cyl. #2 and #3 - End Attach Cap (c, d)
13.
Cyl. #2 - Cap O-Ring Seal
14.
Cyl. #2 - Joint O-Ring Seals
15.
Cyl. #2 - Rod Wiper Seal
16.
Cyl. #2 - Gland (d)
17.
Cyl. #2 - Main Seal
18.
Cyl. #2 - Gland Wire Retaining Ring
19.
Cyl. #2 - O-Ring
20.
Cyl. #3 - Barrel End Cap (e)
21.
Cyl. #3 - Piston Retaining Ring
22.
Cyl. #3 - Piston
23.
Cyl. #3 - Piston Damping Spring
24.
Cyl. #3 - Piston Guide Ring
NOTE:
(a) Small orifice rated at 4 GPM (115 Liters/minute).
(b) The proportional selenoid coil has a 28 ohm rating.
(c) Apply Loctite #242 to the threads of the cylinder rod on final assembly to the valve port block. Torque to 45 ft. lb. (200 Nm).
(d) Removeable.
(e) Fixed Non-Removeable - Welded to cylinder barrel.
Summary of Contents for 1230ES
Page 1: ...AS NZS Service and Maintenance Manual Model s 1230ES P N 3121222 June 22 2017 ...
Page 2: ...NOTES ...
Page 24: ...SECTION 1 MACHINE SPECIFICATIONS 1 12 JLG Lift 3121222 NOTES ...
Page 32: ...SECTION 2 GENERAL SERVICE INFORMATION 2 8 JLG Lift 3121222 NOTES ...
Page 78: ...SECTION 4 BASE COMPONENTS 4 40 JLG Lift 3121222 NOTES ...
Page 104: ...SECTION 5 CONTROL COMPONENTS 5 26 JLG Lift 3121222 NOTES ...
Page 158: ...SECTION 8 DIAGNOSTIC TROUBLE CODES 8 22 JLG Lift 3121222 NOTES ...
Page 198: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 40 JLG Lift 3121222 ...
Page 199: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 3121222 JLG Lift 9 41 ...
Page 200: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 42 JLG Lift 3121222 ...
Page 202: ...SECTION 9 GENERAL ELECTRICAL INFORMATION SCHEMATICS 9 44 JLG Lift 3121222 NOTES ...