Page 11 of 18
4312-4316 Parts List
13
1
14
11
7 2 4 3
15 5 6
12
8 10 9
Item Description Item Description
1 Cover 9 Mechanical Seal
2 Housing 10 Retaining Ring
3 Bracket 11 Cover Screws
4 Idler Gear 12 Nut
5 Seal Gland 13 Cover Screws
6 Rotor 14 Lockwasher
7 O-Ring 15 Gland Screws
8 O-Ring
Seal Replacement
• Grip the pump rmly across the ports and secure the housing in a vise with the shaft end up
• Remove any burrs or nicks on the shaft. Use a small, ne le if needed
• Remove the seal gland cap screws
• Slide the seal gland cap o the shaft
• Remove the stationary seat of the seal from the seal gland
• Slide the seal cartridge o the shaft
• Polish the pump shaft with crocus cloth or very ne sandpaper and clean the seal chamber thoroughly with a clean cloth.
This will prevent damage to the new seal and ease installation
• Place the new seal cartridge on the shaft and slide into place
• Install the new stationary seat into the seal gland
• Place the bearing cap on the shaft and slide into place
• Align the mounting holes and reinstall the seal gland cap screws