Major Rebuild Kit, Kinney, Rotary Piston, Part# 80970800BM

This is not a small maintenance kit. This is a complete overhaul kit. It has everything you need to take your pump apart, replace the worn parts, and put it back together like new .

The kit contains 29 different line items. Here is what you get:

Gaskets (5 total):

• Cylinder/Separator Gasket (807392)

• Valve Deck Cover Gasket (808475)

• Separator Cover Gasket (807636)

• Sight Glass Gasket (804193)

These gaskets seal the main parts of your pump. Without good gaskets, you get leaks. Leaks mean loss of vacuum.

Valves:

• 7 complete Discharge Valve Assemblies (066161) 

The discharge valves are very important. They let gas leave the pump cylinder and stop it from flowing back in. Under normal use, the factory says you should replace these valves every year. When your pump is running properly, you should hear a sharp clicking sound. That clicking means the valves are working.

Bearings and Related Parts:

• 1 Ball Bearing – 45 mm (054115)

• 2 Sleeve Bearings – 1 7/8 (054110)

• 1 Bearing Locknut – N-09 (054098)

• 1 External Retaining Ring (064032)

These are the parts that let the shafts and pistons move smoothly. Worn bearings cause noise, vibration, and heat.

Seals and O-rings:

• 1 Shaft Seal – Head Assembly (065114)

• 1 Seal Seat Assembly (065098) 

• 2 Buna O-rings, 110.72 x 3.53 mm (050245)

• 1 Buna O-ring, 53.57 x 3.53 mm (050227)

• 1 Backup Ring for Shaft Seal – Kinney (803423)

• 1 Backup Ring for Shaft Seal – Leybold Trivac (803422)

Buna-N rubber is the right material for vacuum pumps. It resists oil and handles heat well. The backup rings support the seals and stop them from moving under pressure.

Pistons, Cams, and Internal Moving Parts:

• 1 Slide piston large center (P806288)

• 2 Outer small piston slides (P806289)

• 1 Centre large cam (P806290)

• 2 Outer small cams (P806291)

• 1 Shaft (P809042)

• 1 Large center slide pin (P805005)

• 2 Small outer slide pins (P805004)

• 2 Slide pin spacers (P807532)

These are the big, expensive parts. They are the heart of your pump. If these are worn, your pump will not perform well. This kit includes them so you can truly rebuild the pump, not just patch it up.

Hardware and Other Parts:

• 21 Hex Head Cap Screws (052469)

• 3 Centre Wall Locking Pins (802506)

• 3 Set Screws (802505)

• 6 Woodruff Keys (64057)

• 1 Square Key (64077)

• 1 Special V-Belt (051088)

• 1 Oil Sight Glass, Plexiglas (804192) 

These small parts matter too. The V-belt drives the pump. The sight glass lets you check the oil level. The screws and pins are the exact hardware you need. No running to the hardware store.