Inspection; Disassembly; Assembly - Invacare Spectra Blitz Service Instructions Manual

SERVICE MANUAL
Requirements:
· 19mm open ended spanner
· 19mm Socket / Wrench
· 13 mm open ended spanner x 2
· Flat Bladed screwdriver
· Mallet
· Pressure Gauge
· Pump
· Drift
15.1

Inspection

· Check castor wheels are not buckled or physically damaged. Replace if required.
· Check that the wheel bearings (7) run freely without excessive play.
· Check that the castor wheel and fork nuts (1) are tight.
· Check that the castor forks (4) are bent or damaged.
· Check the crown/castor fork bearings (2) for wear and correct adjustment.
· Check tyres for wear and correct inflation. Both wheels should show the same degree of wear
(see side of tyre pressure rating). For tyre fitment see rear tyre section.
15.2

Disassembly

· Remove castor socket cap with flat bladed screw driver, hold the lower fork stem nut (2) secure
with 19mm spanner and remove the upper fork stem nut (2).
· Gently tap the threaded end to the fork stem (3) with a mallet taking care not to damage the
threads. Remove the castor fork assemblies.
· Lever out the top fork bearing (2) carefully, using the fork stem as a lever. Take care not to
damage the threads.
· Remove the lower fork bearing (2) using a drift and a mallet, tapping gently to avoid damaging
the bearing.
· To remove the castor wheels undo the axle bolt (5) with a 13 mm spanner using a second
spanner at the other end of the axle nut to lock against rotation. Remove the axle bolt and
remove the wheel from the fork.
· Remove the bearings (7) by hand.
15.3

Assembly

· To reassemble the wheel reverse step 5 & 6, but adjust tightness of nut until the wheel runs
freely to a gradual halt.
NOTE:
If the wheel stops abruptly, loosen the castor axle nut.
If the wheel wobbles (side play), tighten the castor axle nut enough to allow free spinning without
side play.
· Insert the fork stem bearings (4) using a mallet and drift across the bearing to prevent damage.
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Invacare - Spectra Blitz