Hummer H1 Service Manual page 696

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18. Remove three screws securing H-Rail to the vehicle safety
cage. Leave the L brackets on the safety cage unless the
cage is going to be replaced, remove the H-rail.
H-RAIL
Figure 10-136: H-Rail Removal
NOTE: While removing the H-rail, note where sealer is placed
so during installation, the sealer can be duplicated
Installation
1. Install L brackets to support structure so the bend is to the
bottom and the brackets are adjusted upward as far as they
could go. Leave the brackets finger tight to ease installa-
tion of other components and adjustment later in the pro-
cedure.
2. Using a bolt and washer, install the threaded L-brackets
onto the H-rail so the bend is upwards. Tighten bolt.
3. Put foam tape on the top mating surface of the C-pillar
cover, and place the rear extrusion against the bottom
surface of the H-rail. Install three screws (Figure 10-137).
4. Put foam tape on the top edge of the B-pillar cover. Place
the cover against the bottom edge of the H-rail and tighten
four upper screws (Figure 10-137).
5. Apply sealer to bottom of B- and C-pillar covers.
6. Install the H-rail onto the support structure. Place the L-
brackets installed on the H-rail under the L-brackets on the
support structure. Tighten screws when installed.
7. Install lower fasteners in B-pillar cover. Do not tighten
(Figure 10-137).
8. Install lower fasteners in C-pillar cover. Do not tighten
(Figure 10-137).
9. Adjust H-rail and extrusions so seams are flush, tighten
fasteners.
05745159
H-RAIL SCREWS (3)
L-BRACKETS
SUPPORT STRUCTURE
8-S10-004
10. Install front upper corner filler piece with two rivets and
sealer (Figure 10-137).
11. Clean excess sealer from mating surfaces.
12. Install new inner door seals. Check door to frame fit and
adjust structure if necessary.
13. Install rail and P-seal on top of windshield with (12)
screws.
14. Install new rubber D-seal between P-seal and the rail.
15. Install the soft top and secure.
NOTE: Clean all surface residue with a tape adhesion pro-
moter before installing extrusions with 2 sided tape.
16. Secure tonneau/rear curtain extrusion to body with five
lockwashers, capscrews, and four self-tapping screws. Use
windshield sealer between the extrusion and the body
(Figure 10-131).
17. Install 43 in. (109 cm) tonneau extrusion on tailgate.
18. Secure 9 in. (23 cm) tonneau extrusion to rear of
wheelhouse.
19. Secure 41 in. (104 cm) tonneau extrusion to side of
wheelhouse, 2 in. (5 cm) from rear corner edge of
wheelhouse.
20. Install velcro strips in extrusions.
21. Install one velcro patch on each wheelhouse side and two
velcro patches on each tailgate chain attachment channel.
22. Secure two bow retainer brackets to wheelhouses with
four screws (Figure 10-138).
23. Leak check the vehicle and add sealer where necessary.
24. Test drive vehicle and check for wind noise.
CAUTION: The ideal crown height of the bow is shown. If
there is excessive crowning of the bow, cut the end of the wood
bow with a saw to reduce the crown. Do not cut more than 0.25
in. (6 mm) at a time, or the bow may become too short.
25. Measure and record the distance across the cargo bed,
between each rear support bar brace. Add 0.25 to 0.50 in.
(6 to 13 mm) to this dimension and mark and cut the wood
bow to this dimension.
26. Position wood bow in two retainer brackets. Lay a straight
edge across the wheel houses as shown (Figure 10-138).
The ideal bow height is 1.5 in. from the straight edge to
the bow crown.
27. Install the four-passenger soft top, tonneau cover, and
slant-back soft top or station wagon soft top, if applicable.
Refer to the owner's manual.
Body 10-69