Hi Bob,
Since you're so close .. I would highly recommend updating your TR4 window
winders to final factory improvement as noted in 1964 bulletin below; (a simple
procedure)
BULLETIN T-64-41
ALL TRIUMPH DEALERS - WESTERN ZONE
SERVICE DEPARTMENT
TRIUMPH TR4 WINDOW
DECEMBER 10, 1964
WINDER REGULATOR
When reports of stiffness in the operation of the door glass are received,
the following procedure should be adopted which will prevent straining and
damage to the regulator. The same instructions should also be followed when
renewing a regulator.
1. Remove trim panel.
2. Raise window and check the clearance of the glass fore and aft in
the top of the rear channel. The recommended clearance is .030" which
should be maintained for the whole length of the channel. Excess clearance
will allow tilting and the jamming of the glass and insufficient clearance
will produce stiff operation. Clearance can be obtained by the use of
packing washers between the inner door panel and top channel bracket (see
illustration A A).
3. Adjust bottom brackets and crimp the tie rod to ensure that the
channels are parallel (illustration C).
4. Remove regulator pivot pin nut and delete spring washer under head
of nut. Add washer WP0119 l/2"x 7/8" x .050" behind head of pivot bolt and
additional washer WP0160 5/16" x 1 5/8" x 16 S.W.G. behind head of nut
(illustration B B).
5. Tighten nut sufficiently to allow ease of operation and peen or
center pop end of thread.
6. Refit trim.
ps; the second page of Bulletin shows 2 helpful drawings - it's easier than
it sounds! (let me know if you need the diagrams)
Good luck,
Carl
'63 TR4 since '74
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