G 3500 1 Ton Van V8-454 7.4L (1989)
![background image](/gmc/g_3500_1_ton_van/v8-454_7.4l/Page-1565002.png)
^
The valve cavity to remove any dust or dirt before installing a new seal.
Install or Connect
1. Seal (57) to the compressor
^
Dip the seal (57) in 525 viscosity refrigerant oil.
2. Valve (56) to the compressor
Tighten
^
Valve (56) to 19 N.m (14 ft. lbs.).