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					          Clutch Replacement & Inspection
Clutch Removal

                                        Be sure to mark the Pressure
                                        Plate to Flywheel
                                        orientation.

                                       Loosen bolts in sequence 1/2
                                       turn at a time to prevent
                                       warpage to Pressure Plate
                                       cover.
                                       Hold Pressure Plate
                                       assembly in position while
                                       removing bolts.

Remove Pressure Plate assembly and Clutch disc as a unit. Be
careful not to allow the Clutch Disc to slide out and fall on the floor.
         Clutch Replacement & Inspection
Clutch Disc Inspection
                                    Measure lining thickness from
                                    lining to the head of a rivet at
                                    thinnest point.
                                    Check lining surface for cracks,
                                    missing chunks, glazing and oil
                                    contamination.
                                    Inspect for loose, broken or
                                    missing torsion springs.
                                   Inspect Clutch Disc Spline for
                                   wear and distortion. Place on the
                                   Input Shaft to check axial
                                   freeplay.
Inspect Clutch Disc cushion springs for collapsed, cracked or broken
cushion springs.
       Clutch Replacement & Inspection
Pressure Plate & Cover Inspection
                             Inspect the Pressure Plate
                             surface for overheating
                             (blueing), heat checks, hot spots.
                             Sand surface to determine depth
                             of the defect.
                              Inspect surface for scoring and
                              warpage with a straight edge &
                              Feeler Blade.
                              Inspect for broken, cracked
                              or warped Pressure Plate
                              springs.
       Clutch Replacement & Inspection
Pressure Plate & Cover Inspection
                             Inspect diaphragm spring
                             fingers for bending, cracks or
                             uneven wear at the Release
                             Bearing contact point.
                             Measure thickness of release
                             fingers at Release Bearing
                             contact point. Replace if under
                             specification.
        Clutch Replacement & Inspection
Flywheel Inspection
                               Inspect the Clutch Disc contact
                               surface for overheating
                               (blueing), heat checks, hot spots
                               and glazing. Sand surface to
                               determine depth of defect.
                               Inspect the friction surface for
                               scoring and warpage with a
                               straight edge & Feeler Blade.
                               Some Flywheels can be ground
                               to remove all defects except
                               cracks or hot spots.
                               Some Flywheels must be
                               replaced because surface
Inspect ring teeth for worn,   hardening cannot be removed.
mushroomed or missing teeth.
       Clutch Replacement & Inspection
Flywheel Inspection
                       If the friction surface is
                       contaminated with oil or grease,
                       determine the source and
                       correct it before re-assembly.
                       Measure the Flywheel run-out
                       with a Dial Indicator. If no
                       specs. are available, use .0005”
                       per inch of disc diameter.
                       If Flywheel run-out is out of
                       spec, measure the Crankshaft
                       Flange run-out. .0005”
                       maximum .
                        Check for Pilot Bushing wear
                        with small hole gauge.
         Clutch Replacement & Inspection
Release Bearing Inspection
Rotate the Release Bearing while
applying pressure to the contact
surface.
If the Release Bearing has
seized, inspect the Clutch Fork
and bearing retaining clip.
It’s always wise to replace the
Release Bearing because of it’s
low cost verses the labour cost
to removing & installing the
Transmission.
         Clutch Replacement & Inspection
Clutch Re-assembly
Clean all friction surfaces of
grease and oil with Brake Cleens
or equivalent.
Install the Clutch Disc in the
proper direction. Flywheel side
(flat side) is usually marked.
         Clutch Replacement & Inspection
Clutch Re-assembly
Install the alignment tool
through the Clutch Disc and into
Pilot Bearing to align the disc.
Position the Pressure Plate &
Cover on the flywheel aligning
the marks.
          Clutch Replacement & Inspection
Clutch Re-assembly
Install all bolts and finger
tighten .
                                               1
Tighten bolts 1/2 turn at a time
in the proper sequence.
                                       5


                                                       4
                                   3


                                           6       2
          Clutch Replacement & Inspection
Clutch Re-assembly
Torque all bolts in the proper
sequence .
Check the release lever/finger
height after tightening the
bolts.
If incorrect, the release levers
may require adjustment (coil
type), require resetting or
replacement.
         Clutch Replacement & Inspection
Clutch Re-assembly
Lubricate the Input Shaft
Splines and Input Shaft
Sleeve with a light coat of
chassis lube.
Lubricate the Release Bearing
to Clutch Fork contact points
and Clutch Fork Pivot with a
light coat of chassis lube.

				
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posted:12/9/2011
language:English
pages:12