Appendix - Long-Term Pavement Performance Program Falling Weight Deflectometer Maintenance Manual (FHWA-HRT-05-153) - LTPP - Pavements

APPENDIX: SCHEDULED MAINTENANCE LOG

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

Date
Owner
Model No.
Serial No.
Hour meter/Drop counter - Incoming, Outgoing

Date	Maintenance Required	Maint. Performed	Page No./ Figure No.
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	Maintenance Required	Maint. Performed	Page No./ Figure No.
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	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