1994 Buick Skylark Water Pump Removal

Coolant Pump and Cover

REMOVE OR DISCONNECT
1.Negative battery cable.
2.Drain and recover the coolant.
*Heater hose from thermostat housing for more complete coolant drain.
3..Oxygen sensor connector.
4.Upper and lower exhaust manifold heat shields. 5.Exhaust manifold brace to manifold bolt.
6.Break loose the manifold to exhaust pipe spring loaded nuts.
7.Radiator outlet pipe assembly to coolant pump cover bolts.
8.Raise vehicle.
9.Exhaust pipe from exhaust manifold.
10.Pull down and back on the exhaust pipe to disengage it from the exhaust manifold bolts.
11.Radiator outlet pipe from oil pan and transaxle.
*If equipped with manual transaxle the exhaust manifold brace will have to be removed.
*Leave the lower radiator hose attached and pull down on the radiator outlet pipe to disengage it from the coolant pump. Let the radiator outlet pipe hang.
12.Lower vehicle.
13.Exhaust manifold to cylinder head retaining nuts.
14.Exhaust manifold, seals and gaskets.
15.Coolant pump cover to cylinder block bolts.
16.Coolant pump assembly to timing chain housing nuts.
17.Coolant pump and cover assembly.
18.Coolant pump cover to coolant pump assembly bolts.

CLEAN
*All sealing surfaces.

INSTALL OR CONNECT
Prior to installing coolant pump read the entire procedure. Pay special attention to the tightening sequence to avoid part damage and to Insure proper sealing.

1.Coolant pump cover to coolant pump assembly and install bolts hand tight.
2.Lubricate splines of coolant pump drive with Chassis Grease GM P/N 1051344 or equivalent and install pump and cover assembly.
3.Cover to block bolts hand tight.
4.Pump to chain housing nuts hand tight.
5.Lube "0" ring on radiator outlet pipe with an anti-freeze solution and slide pipe into coolant pump cover install bolts hand tight.
6.With all gaps closed, torque in sequence as follows:
a.Pump assembly to chain housing nuts.
b.Pump cover to pump assembly.
c.Cover to block, bottom bolt first.
d.Radiator outlet pipe asm. to cover.
7.Exhaust manifold and new gaskets.
8.Exhaust manifold to cylinder head retaining nuts. Follow the tightening sequence and tighten to specification. See: Exhaust System Exhaust Manifold Service and Repair
9.Raise vehicle.
10.Index exhaust manifold bolts into exhaust pipe flange.
11.Exhaust pipe to exhaust manifold.
12.Turn both bolts in evenly to avoid cocking the exhaust pipe and binding the bolts. Turn bolts in until fully seated.
13.Radiator outlet pipe to transaxle and oil pan.
*If equipped with manual transaxle install the exhaust manifold brace.
14.Lower vehicle.
15.Exhaust manifold brace to manifold bolt.
16.Tighten the manifold to exhaust pipe nuts to specification. See: Exhaust System Exhaust Manifold Service and Repair
17.Upper and lower heat shields.
18.Oxygen sensor connector.
19.Fill radiator with coolant until coolant reaches heater hose coolant outlet then install hose (this assists with complete cylinder block fill) then continue fill. See: Service and Repair
20.Negative battery cable.
21.Start engine.

INSPECT
*For leaks.

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