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Publication Number: FHWA-HRT-05-153
Date: December 2006

Long-Term Pavement Performance Program Falling Weight Deflectometer Maintenance Manual

Appendix: Scheduled Maintenance Lo

SCHEDULED MAINTENANCE LOG FOR FWD TRAILER
(Revised: 12 July 2005)

 

Date  
Owner  
Model No.  
Serial No.  
Hour meter/Drop counter - Incoming, Outgoing  
 
Date Insp. Initls. Maintenance Required Maint. Performed Page No./ Figure No. Comments
Hydraulic System and Related Components:
    Change hydraulic oil/filter Annually P-26/F-44  
    Inspect rubber pad on load cell Daily P-53/F-97  
    Grease load cell Monthly P-52/F-96  
    Lubricate guide rollers Weekly P-23/F-39  
    Visual inspection of excess pressure Daily P-26/F-44  
    Inspect load cell swivel operation Monthly P-50/F-92  
    Inspect load cell attaching brackets Monthly P-51/F-94  
    Lubricate upper catch assembly Weekly P-44/F-84  
    Rotate catch assembly Daily P-45/F-85  
    Check hydraulic oil level Daily P-15/F-25  
    Check guide profiles and shims Annually P-19/F-32  
    Check side cylinder bolts Every 6 months P-46/F-87  
    Check center cylinder for leaks Monthly P-35/F-65  
    Check A/B valve for leaks Monthly P-26/F-44  
    Check hydraulic lines and connections for leaks Monthly P-24/F-40  

SCHEDULED MAINTENANCE LOG FOR FWD TRAILER

(Revised: 12 July 2005)

 

    Date  
Owner  
Model No.  
Serial No.  
Hour meter/Drop counter - Incoming, Outgoing  
 
Date Insp. Initls. Maintenance Required Maint. Performed Page No./ Figure No. Comments
Hydraulic System and Related Components (Continued):
    Inspect side cylinder for leaks Monthly P-46/F-86  
    Inspect strike plate hardware Monthly P-49/F-90  
    Check center cylinder to strike plate nut Annually P-29/F-51  
    Check condition of buffers Monthly P-23/F-39  
           
           
           
           
           
           
           
           
           
           
           

SCHEDULED MAINTENANCE LOG FOR FWD TRAILER

(Revised: 12 July 2005)

 

    Date  
Owner  
Model No.  
Serial No.  
Hour meter/Drop counter - Incoming, Outgoing  
 
Electronics/Electrical Components:
    Inspect trailer battery - Clean terminals/check water level Monthly P-18/F-28  
    Inspect electronics battery (in vehicle) Monthly P-72/F-137  
    Clean ground terminals (two in trailer) Monthly P-3/F-1 and P-4/F-2  
    Inspect four proximity switches Monthly P-67/F-129  
    Inspect PS1/PS2 switches Monthly P-27/F-46  
    Clean fuse block terminals (trailer) Every 3 months P-72/F-137  
    Inspect hydraulic motor brushes Every 6 months P-25/F-43  
    Check charging plug from vehicle to trailer connection Every 3 months P-70/F-134 and 135  
    Check power control board connections Every 6 months P-18/F-29  
    Check seismic sensor connections Monthly P-71/F-136  

SCHEDULED MAINTENANCE LOG FOR FWD TRAILER

(Revised: 12 July 2005)

 

    Date  
Owner  
Model No.  
Serial No.  
Hour meter/Drop counter - Incoming, Outgoing  
 
Electronics/Electrical Components (Continued):
    Check air and infra-red sensor connections (optional equipment) Monthly  
    Clean and inspect multisignal cable Every 3 months  
    Clean inside of 9000 processor Annually P-68-69/F-131 and 132 Use extreme caution
    Check air-gap vehicle-mounted DMI Annually P-70/F-133  
    Clean connectors in electrical control box Annually P-68/F-130  
Raise/Lower Bar Assembly:
    Lubricate front pulley wheels Monthly P-57/F-105  
    Lubricate rear pulley wheels Monthly P-47/F-88  
    Check rut bar depth - adjust Annually P-59/F-109  
    Check geophone holders Monthly P-59/F-110  
    Check geophone holder springs Monthly P-61/F-113 Replace as a set
    Check geophone clamping disk Monthly P-60/F-112  

SCHEDULED MAINTENANCE LOG FOR FWD TRAILER

(Revised: 12 July 2005)

 

    Date  
Owner  
Model No.  
Serial No.  
Hour meter/Drop counter - Incoming, Outgoing  
 
Date Insp. Initls. Maintenance Required Maint. Performed Page No./ Figure No. Comments
Raise/Lower Bar Assembly (Continued):
    Lubricate foam guide Monthly P-60/F-112  
    Raise/lower bar cable (inspect) Monthly P-57/F-105  
    Raise/lower bar rear guide and bolt Annually P-55/F-102 Re-apply thread locker
           
           
           
           
           
           
           
           
           
           
           
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