Briggs & Stratton 13D1-19, 13D1-(19) PPO manual 855 Seal Assembly

To ease installation of the seal, lubricate the O- rings, sleeve and bellows with water or a very small amount of oil, and apply a drop of light lubricating

oil on the finished faces. Assemble the seal as fol- lows, (see Figure 3).

SHAFT

IMPELLER

SHAFT SLEEVE

This seal is not designed for operation at temperatures above 160_F (71_C). Do not use at higher operating temperatures.

Inspect the engine stub shaft for damage. Small scratches or nicks may be removed with a fine file or emery cloth. If the stub shaft is bent of excessive- ly worn, replace the shaft (see the engine service manual).

To ease installation of the intermediate O-ring (21), lubricate the O-ring with water or a very small amount of oil. Install the O-ring on the intermediate. Position the intermediate against the engine bell- housing and secure it with hardware (19 and 20).

Assemble the O-ring into the stationary seat. Press the stationary seat into the intermediate bore until fully seated. A push tube cut from a length of plastic pipe would aid this installation. The I.D. of the tube should be approximately the same as the I.D. of the seal spring.

Subassemble the rotating element into the retainer and bellows. Apply a drop of light oil on the preci- sion finished faces; never use grease. Use even pressure to carefully press this subassembly onto the sleeve (6) until the rotating element is just flush with the chamfered end of the sleeve.

Slide the sleeve and assembled rotating portion of the seal onto the shaft until the seal faces contact. Continue to push the sleeve through the seal until it seats squarely against the shaft shoulder.

Install the seal spring and spring centering washer.