Electra Park Avenue V8-307 5.0L VIN Y 4-bbl (1984)
FIGURE 3
2.
Find the Canister TVS (see applicable Figure 1 or 3) and observe the color of its top.
If the top of the Canister TVS is black (part number 22536551), proceed directly to Step 14.
If the top of the Canister TVS is white (part number 03048075), or red (part number 22514776), proceed to Step 3. White and red top Canister
Thermo Vacuum Switches (TVS) are to be replaced regardless of their age or operating condition.
3.
Disconnect negative battery cable.
4.
Drain coolant (save in a clean container for reuse) to a level just below the TVS. Drain coolant according to the procedure and CAUTIONS listed
in the 1984 Buick Chassis Service Manual Section 6B.
5.
Remove air cleaner.
6.
Remove A/C compressor support brace. Additionally on Riviera, disconnect the electrical connector at the A/C Compressor, loosen three
compressor mounting bolts, remove belt, remove bolts and move A/C Compressor aside to provide access to the TVS.
7.
Disconnect vacuum hoses from canister purge TVS and remove TVS (see appropriate Figure). Use TVS switch socket wrench J 26435-A, or
equivalent, 7/8" socket with a slot in the side.
8.
New canister purge TVS part number 22536551 has the threads precoated with sealant. If the threads are not precoated, then coat with pipe
sealant, part number 1052080, or equivalent. Install using TVS switch socket wrench J 26435-A, or equivalent.
9.
Reinstall vacuum hoses to TVS as shown in Figure 2. Hose routings should be as shown in the applicable Figure (1 or 3).
10.
Reinstall air cleaner, ensuring all hose connections are made.
11.
Reinstall A/C Compressor support brace. Additionally, on Riviera, reinstall A/C compressor to mounting brackets, reinstall bolts and belt. Using a
Belt Tension Gage, tension (used) belt to 400 N. (90 lbs.) minimum. Torque mounting bolts to 50 N-m (38 ft.lbs.). Reconnect electrical connector
to A/C Compressor.
12.
Refill coolant, following the procedure and CAUTION listed in Section 6B of the 1984 Buick Chassis Service Manual.
13.
Reconnect negative battery cable.
14.
Install a Campaign Identification Label.
