Park Tool Rebuild kit for TS-2 Professional Truing Stand - Manual

Park Tool Co. 5115 Hadley Ave. N., St. Paul, MN 55128 (USA) www.parktool.com
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TS-RK Professional
Truing Stand Rebuild Kit
Installation of New Main Shaft and Bearings
Use TS-2 schematic figure and part reference chart for the following instructions.
1. Loosen set screws or cap screws located on both main shaft adjusting
collars #209-2. Collars should rotate freely on main shaft #211S. Uprights
#201-2 should now move at top when pushed left or right. On older stands
it may be necessary to remove collar set screw completely and lubricate
hole to free collars from main shaft.
2. Remove right side upright pivot bolt #225-2 and pull upright toward the right.
3. Turn knob #213S clockwise to disengage main shaft from left side threaded
pivot bushing #204LS.
4. Pull knob #213S to right and remove main shaft and right side upright from
stand. Remove old collars and spring.
5. Remove both knob #213S and knob locknut #212S from main shaft.
6. Remove left side upright pivot bolt and remove left side upright from base.
7. Remove old bushings #232-2 from both uprights and install four new
bushings into uprights.
8. Grease both threaded pivot bushings on left and right side uprights. Use
care not to mix up bushing or arms. Left side bushing has left hand threads
and has yellow plating. Right side bushing has right hand threads. Grease
pivoting surface and outer faces of bushings.
9. Re-install left side upright and pivot bolt back into base. Tighten bolt fully.
10. Grease threads of new main shaft #211S. Install main shaft through hole in
right side upright and into bushing. NOTE: Main shaft has both left and right
hand threads. Right hand threads go to right side upright and left hand threads
go to left side upright. Right side of main shaft has more threads than left side.
11. Thread knob locknut onto right side of main shaft until 8 threads are ex-
posed (distance of 16mm.) Install knob #213S and tighten against locknut.
12. Guide main shaft through right side of base.
13. The following parts will be installed on main shaft between short base
uprights: bearing washer #749-1, needle bearing #748-1, bearing washer
#749-1, main shaft adjusting collar #209-2, spring #229, main shaft adjust-
ing collar #209-2, bearing washer #749-1, needle bearing #748-1, bearing
washer #749-1. NOTE: It is necessary to compress the spring to install the
left hand set of collar, washers, and bearing.
14. Install right side upright into base. DO NOT attach right side pivot bolt at
this time.
15. Sight from left side of base to align threads of pivot bushing to threads of
main shaft. Grab main shaft to raise or lower as necessary. Rotate threaded
bushing as necessary to best align main shaft and bushing threads.
16. Push left bushing against end of main shaft. Maintain pressure against
main shaft and rotate knob counter-clockwise. If more than one rotation of
knob is required to engage main shaft into bushings, unthread main shaft
and start threading again.
17. Continue to thread knob counter-clockwise until main shaft just begins to
protrude out left side pivot bushing.
18. Install right side upright and pivot bolt into base. Tighten bolt fully.
19. Grab both uprights and move them side-to-side until they appear
approximately symmetrical.
Installation of Split Nylon Bushings #235-2 and #235-2R onto Caliper Arm
1. Loosen caliper adjusting knob #217S until caliper arm #207-2 is nearly
vertical in order to relax tension in spring #206S.
2. Unhook spring #206-2 from caliper arm.
3. Remove right side caliper locknut #233-2, washer #234-2, and old
bushing #235-2.
4. Install new bushing #235-2R. NOTE: right side caliper arm bushing has special
protrusion at flange. Align flange protrusion with opening in caliper arm mount.
5. Re-install washer and nut on right side and tighten.
6. Remove left side caliper locknut and washer. Remove old bushing and
install new bushing without flange protrusion, #235-2.
7. Re-install washer and nut on left side and tighten.
8. Check adjustment of caliper arm. Locknuts should be as snug as possible
but still allow the caliper arm to freely move up and down.
9. Raise caliper arm again to vertical position and re-install spring.
10. Lower caliper to working height of rim and tighten caliper adjusting
knob #217S.
Centering Adjustment of the TS-2
1. Sight down the front of the stand. The top edge of the caliper mounting
plate must be parallel to the main shaft. If it isn’t, place a large adjustable
wrench across the plate and twist as necessary to bring it into alignment.
2. Either the #1554-1 Centering Gauge or a dished wheel is needed to deter-
mine if the wheel is centered in the stand. If using a wheel, use a dishing
tool, such as the Park Tool WAG-4 or WAG-5, to determine the accuracy of
the wheel.
3. Place the wheel or Centering Gauge in the stand and rotate the upright
adjustment knob just until the uprights touch the locknuts on the hub. DO
NOT FORCE UPRIGHTS INTO HUB LOCKNUTS BY OVERTIGHTING KNOB.
4. Measure the distance between the left edge of the rim or gauge and the left
base upright, as well as the distance between the right edge of the rim or
gauge and the right base upright. If the measurements are different, gently
tap the uprights sideways until the measurements are equal on both sides.
Tighten the cap screws in the shaft adjusting collars.
5. Remove wheel and check side-to-side play of uprights. Shaft adjusting col-
lars and bearings should be fully against base. There should be little or no
play in uprights.
6. Re-install wheel. Re-adjust collars only if there is excessive play in uprights.
7. Rotate the caliper arm adjusting knob to raise the calipers close to rim.
Open or close the calipers as necessary using the caliper adjusting knob
to check that the rim is centered between the two calipers. If the rim is not
centered, loosen the caliper arm nut #233-2 on one end of the caliper arm
pivot shaft and tighten the opposite nut an equal amount. This will shift the
entire caliper arm assembly toward the side that was tightened. Continue
until rim is centered between the calipers. For example, if there is a gap
between rim/gauge at left side caliper, loosen left caliper nut #233-2 and
tighten right side caliper nut. This moves the entire caliper arm mechanism
to the right.
8. Double check the caliper arm for free motion. Over tightening caliper shaft
nuts will bind caliper arm.
NOTE: While the TS-2 is designed to provide automatic dishing of the wheel,
imperfections in the shape or condition of the axle or locknuts can affect the
dish reading, as the imperfection is magnified significantly by the distance
from the hub to the rim, where the actual reading is taken. Because of this, for
precision work, a dishing tool such as the Park Tool WAG-4 or WAG-5 should be
used to verify final adjustments.
Installing Caliper Springs #222-SR and #222-SL
NOTE: Test caliper springs by moving caliper outward and releasing. If spring
is not fatigued, save replacement springs #222-SR and #222-SL for future use.
Note that right side spring #222-SR coils counter-clockwise, and left side spring
#222-SL coils clockwise.
1. Use tape or other mark on right side caliper to distinguish it from left side.
2. Loosen caliper adjusting knob #224S until shaft is nearly removed from
caliper arm.
3. Remove left side caliper locknut #226-2, caliper spacer #228-2R and
spring #222-SL.
4. Remove right side caliper locknut #226-2, caliper spacer #228-2R and
spring #222-SR.
5. Install spacer #228-2R and spring #222-SR onto right side of caliper bracket.
Engage spring into hole in caliper bracket.
6. Install right side caliper onto caliper bolt by tilting spring top downward
and manipulating spring end into caliper. Next manipulate caliper and
spring over spacer and onto the stud. Install and tighten locknut. Use care
not to pinch spring coils between spacer and caliper.
7. Install left side spring, spacer and caliper using similar technique.
8. Check adjustment of caliper locknuts. Snug locknuts but do not over
tighten. Pull back slightly on each caliper and release. If arm does not freely
return, locknut is overly tight.
9. Tighten caliper adjusting knob #224S until caliper opens up to working position.
10. Double check centering of TS-2 and adjust as necessary using Centering
Adjustments of the TS-2 described above.
Installation Procedures