C Outrigger System

Contents

C-1 Jack Cylinder....................................1

1. Structure...................................................1

2. Check Valve Mounting Bolt.......................1

C-2 Pilot Check Valve (Jack)..................2

1. Structure...................................................2

Cylinder

C-1 Jack Cylinder [NOTE]

There is a case that the appearance and so on differ from the parts for this crane. Although there is not so much difference in functions and disassembly procedures, make sure of the serial number of this crane and the part sales unit described in the parts catalog before starting disassembling operations.

1. Structure

General View

2. Check Valve Mounting Bolt

Pilot Check Valve (Jack)

C-2 Pilot Check Valve (Jack)

[NOTE]

There is a case that the appearance and so on differ from the parts for this crane. Although there is not so much difference in functions and disassembly procedures, make sure of the serial number of this crane and the part sales unit described in the parts catalog before starting disassembling operations.

1. Structure

Thread size and tightening torque

Hydraulic Motor

D-1 Hydraulic Motor [NOTICE]

There is a case that the appearance and so on differ from the parts for this machine. Although there is not so much difference in functions and disassembly procedures, make sure of the serial number of this machine and the part sales unit described in the parts catalog before starting disassembling operations.

1. Structure

Thread size and tightening torque

Hydraulic Motor

2. Disassembly

1. Loosen the bolts (20) to separate the bottom cover (15) about 10 mm. This is necessary to prevent the shaft (1) from popping out by the force of the center spring (14-5).

2. Remove the retaining ring (7).

3. Insert the flat blade of a screwdriver into the slot of the oil seal cover (5) to remove the oil seal cover (5), together with the oil seal (6).

[NOTICE]

Do not pull out the shaft (1). As it is difficult to engage the male spline teeth of the shaft (1) with the female ones of the cylinder barrel (14-1), reassembly will be troublesome.

3. Reassembly

1. Make sure that the O-rings (4) and (18) are placed in position.

2. Apply grease to the lip area of the oil seal (6). Install the oil seal (6), together with the oil seal cover (5), into the housing (3).

3. Securely put the retaining ring (7) into the groove of the housing (3).

[NOTICE]

When putting the retaining ring (7), be sure to place the rounded edge inside (next to the bearing). If the rounded edge is place outside, there is a possibility that the retaining ring may come off because of an internal force such as spring force and hydraulic force.

4. Install the bottom cover (15) as before.

Swing Speed Reducer

D-2 Swing Speed Reducer

[NOTE]

There is a case that the appearance and so on differ from the parts for this machine. Although there is not so much difference in functions and disassembly procedures, make sure of the serial number of this machine and the part sales unit described in the parts catalog before starting disassembling operations.

1. Structure

22.Case

23.

24.

25.

26.

27.

28.

Swing Speed Reducer

2. Dismounting And Remounting

[NOTE]

When the swing speed reducer is removed, the swing post is freed. Before removing the reducer, fasten the swing post to the lower frame with a wire rope to prevent its rotarion. Fill the reducer with gear oil (Mobil 632) to the middle point on the oil gauge. (To check the oil level, just place the gauge on the gauge hole)

Quantity: 0.5 lit.

3. Disassembly

1. Remove plug-12 , and drain the oil.

2. Remove oil gauge-10.

3. Remove snap ring-1 and remove spacer-2 and thim set-3. To facilitate extracting worm-5, turn the spur gear-10 while shaking it slightly.

4. Extract worm-5 together with bearing-4 and-6 toward the motor side.

5. Separate the spur gear-10 and gear case-13 from the gear case-19. Use the separating tap (M12, coarse thread) to separate them following the procedure below because the pin-22 is tightly fit. (The separating tap is made on the hole for the bolt-16.)

Put a spacer on the bottom of the separating tap to prevent damage to the hole in the gear case-19 for the bolt-16.

Then screw a bolt into a separating tap in the gear case-13 to separate the gear case-13 from the gear case-19.

6. Remove bolt-16, then remove spur gear-10 together with gear case-13 and bearings-14, 15 and 20.

7. Remove nut-21, then remove bearing-20, worm wheel-18, and key-17 from spur gear-10.

8. Remove spur gear-10 from gear case-13, then remove bearings-14 and-15, oil seal-12 and sleeve-11.

Notes for Reassembly

With regard to the handling of oil seals and bearings, refer to the separate REPAIR MANUAL, GENERAL CAUTIONS ("Sealing Parts" and "Mechanical Elements" sections). Maintenance

Swing Speed Reducer

Thread size and tightening torque

Swing Bearing

D-3 Swing Bearing [NOTICE]

There is a case that the appearance and so on differ from the parts for this machine. Although there is not so much difference in functions and disassembly procedures, make sure of the serial number of this machine and the part sales unit described in the parts catalog before starting disassembling operations.

1. Structure

General View

Swing Bearing

2. Notes for installation

When installing the inner ring of the swing bearing, face the soft zone (stop plug) to the position shown in the figure on the previous page.

To tighten the boltsï2,3,5, follow the procedures below. Tighten all the bolts temporarily with approximately half the specified tightening torque. Then tighten the bolts securely. After tightening one bolt in this case, tighten the diagonally opposite bolt.