Governor: Service and Repair

Governor

1. Remove extension housing, then remove output shaft bearing rear snap ring and remove bearing.

Fig. 9 Exploded view of governor:

2. Remove snap ring, Fig. 9, from weight end of governor valve shaft and remove valve shaft from governor body.
3. Remove large snap ring from weight end of governor housing, and lift out weight assembly.
4. Remove snap ring from inside governor weight and remove inner weight and spring from outer weight.
5. Remove snap ring from behind governor housing, then slide governor housing and support assembly off output shaft. If necessary, separate governor housing from sprag (4 screws).
6. The primary cause of governor operating failure is due to a sticking governor valve or weights. Rough surfaces may be removed with crocus cloth. Thoroughly clean all parts and check for free movement before assembly.

Cleaning and Inspection






Figure 10 shows a disassembled view of the governor assembly.
Inspect all parts for burrs and wear. Inspect inner weight for free movement in outer weight, and outer weight for free movement in governor body. Inspect valve for free movement in governor body. The weights and valve should fall freely in the bores when clean and dry. Rough surfaces may be removed with crocus cloth. Wash governor screen. Inspect governor seal rings for wear on sides and outside diameter. Inspect governor weight spring for distortion. Inspect lugs on support gear for broken edges or other damage. Thoroughly clean all governor parts in clean solvent and test for free movement before assembly.

Assembly

Assemble governor weights and spring, and secure with snap ring inside of large governor weight. Place weight assembly in governor body and install snap ring.

Installation

Fig. 9 Exploded view of governor:

(1) Assemble governor body and screen to the support and tighten bolts finger tight. Make sure oil passage of governor body aligns with passage in the support.
(2) Position support and governor assembly on the output shaft. Align assembly so valve shaft hole in governor body aligns with hole in the output shaft, then slide assembly into place. Install snap ring behind governor body (Fig. 9). Tighten the body to support bolts to 100 in. lbs. (11 N.m). The support bolts have a self-locking nylon patch and can be reused.
(3) Assemble governor weights and spring, and secure with snap ring inside of large governor weight. Place weight assembly in governor body and install snap ring.
(4) Place governor valve on the valve shaft, insert assembly into the body and through governor weights. Install valve shaft retaining snap ring. Inspect valve and weight assembly for free movement after installation.
(5) Install output shaft bearing and extension housing.