ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
TEST OR INSPECTION
2. LAMPS DIM OR FLICKERING - CONTINUED.
Check continuity between ground wire eyelet end and trailer frame.
If no continuity exists, remove eyelet and clean mating surfaces.
Check continuity between edge of lamp socket and light assembly housing.
If no continuity exists, replace light assembly:
Check continuity between edge of lamp socket and trailer frame.
If no continuity exists, clean mating surfaces.
3. BRAKES WILL NOT RELEASE.
If only one wheel's brake will not release, proceed to step 4.
Check relay valve for proper operation. Refer to page 2-12, step 27.
Before performing any maintenance tasks on brake system, disconnect trailer air lines
from towing vehicle and open draincock to release all air pressure from system. Serious
injury may result from failure to do so.
Check airbrake chamber for insufficient push rod travel.
All parts of the service brake assembly will be coated with asbestos dust from the brake
linings. A filter mask should be worn whenever working on any assembly components.
Breathing asbestos dust may cause serious damage to health.