Hydraulic cylinder seal kits are used to seal the gap between different parts of the hydraulic cylinder. The function of hydraulic cylinder seal kits is to prevent oil leakage, to assure the working pressure of the hydraulic system, to maintain its power.
Boom Cylinder seal kit is, as the name suggests, fitted into the boom cylinder.
There are regularly three cylinders for the excavator, boom cylinder, arm cylinder, bucket cylinder.
Arm cylinder is the top one, and it's usually be called as top cylinder;
The bucket cylinder is the one that connects and controls the bucket.
Boom cylinder is the one (or the two) near the cabin. Usually, there is one piece boom cylinder for the small excavator under 10-tun; the bigger excavator's two pieces boom cylinders. But there is an exception too when the driver will remove one piece for a special purpose, say at some particular working place, it is convenient to work by one cylinder. Soft remind: all refit job should be operated by an experienced technician.

When you open and repair the cylinder, please follow below operation:

1. Take off the cylinder from the machine.

2. Remove the head assembly and the rod assembly from the stick cylinder group.

3.If it always happens that the seal kit does not perform well soon after it fitted, there may be a problem with the cylinder assembly itself. It is better to check the cylinder assembly whether need to change it.

4.Meansure the seal kits before fitting.

5.Install the seals.

After fixing the cylinder assy, test it first before reinstalling the stick cylinder group on the machine.

Part No

Parts name

Part No

Parts name

707-04-XZ060

CYLINDER GROUP,(FINAL COATING)

17A-63-X2131

CYLINDER GROUP

707-04-00050

CYLINDER ASS'Y

17A-63-02131

CYLINDER ASS'Y

17A-63-52141

CYLINDER

195-63-52160

BUSHING

707-27-18830

HEAD,CYLINDER

707-27-18520

HEAD,CYLINDER

707-52-90680

BUSHING

707-52-10910

BUSHING

707-51-90030

PACKING,ROD

707-51-90211

PACKING,ROD

707-51-90640

RING,BUFFER

707-56-90740

SEAL,DUST

07179-13104

RING,SNAP

07000-15170

O-RING

07146-05172

RING,BACK-UP

01010-81865

BOLT

01643-31845

WASHER

15A-63-52120

ROD,PISTON

707-36-18400

PISTON

07000-12070

O-RING

707-35-52910

RING,BACK-UP

707-44-18180

RING,PISTON

07156-01822

RING,WEAR

707-40-18070

SPACER

01010-61240

BOLT

15A-71-12150

TUBE

15A-71-12160

TUBE

07000-13030

O-RING

07000-13025

O-RING

01010-80840

BOLT

01010-80855

BOLT

01010-80835

BOLT

01010-50845

BOLT

01643-30823

WASHER

195-63-52871

CLIP

01010-81420

BOLT

01643-31445

WASHER

17A-63-52191

COVER

01010-81635

BOLT

01643-31645

WASHER

154-63-52890

PLUG,(FOR SHIPPING)

707-99-64550

SERVICE KIT

707-98-64410

SERVICE KIT

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