Komatsu PC88MR-10 Shop Manual page 47

Hydraulic excavator

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Precautions for installation and assembly work

Tighten the bolts and nuts (sleeve nuts) to the specified torque (KES), unless otherwise specified.

Install the hoses without twist and interference, and securely fasten the clamps located in-between if they

Replace all of the gaskets, O-rings, cotter pins, and lock plates with new parts.

Bend the cotter pins and lock plates securely.

When applying adhesive, clean and degrease the part, and apply 2 to 3 drops of adhesive to the threaded

When applying liquid gasket, clean and degrease the surface, and apply it uniformly after making sure that

the surface is free from dirt or damage.

Clean all of the parts, and repair any damage, dents, burrs, or rust found on them.

Coat the rotating parts and sliding parts with engine oil.

Coat the surfaces of the press-fitting parts with molybdenum disulfide lubricant (LM-P).

After installing the snap ring, check that the snap ring is settled in the ring groove completely.

When connecting wiring harness connectors, clean the connectors to remove oil, dirt, or water, then

connect them securely.

Use the eye bolts with no fatigue and deformation and screw them in securely. Match the directions of the

eyes and the hook.

When installing split flanges, tighten the bolts uniformly and alternately to prevent excessive tightening on

As a rule, apply liquid gasket (LG-5) or liquid sealant (LS-2) to the threaded part of each taper male

screws which receives pressure.

However, if the threaded part is difficult to degrease, you may use a seal tape.

When winding a seal tape onto a right-handed taper male screw, wind it clockwise in the advancing

direction of the threads, seeing from the screw end and starting at the third thread.

a If you wind the seal tape in the opposite direction, it becomes loose and comes off or its end part is

pushed out, and that can cause oil leakage.

Square head type (A)

00 Index and foreword

Foreword, safety and general information

Hexagonal socket head (B)

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