Tru Count Air Clutch Maintenance
Air Clutch System Enemies
Dust and Dirt
Water
Maintenance is critical to ensure proper operation
Air Clutch Lubrication
Clutches are self-lubricating and require little maintenance.
Lubricate the air cylinders as required every 75–100 hours of operation and at the end of the season to keep the pistons lubricated. – Must use dry silicone included in the kit—using
penetrating oil, grease, brake cleaner, and so on, voids the warranty and reduces clutch performance.
– Any solvents used will only work temporarily and then dry out the clutch. Heavier oils may gum up clutches.
Air Clutch Lubrication
Symptoms requiring lubrication:– Clutch not clutching
(continuous planting)– Clutch slow to resume
planting after being shut off– Check Air Valve Module
Box also if clutches are not engaging
3 Possible Scenarios
1. After 75 Hours
2. After end of Season
3. Complete Clutch Cleaning
Clutch Air Cylinder
Maintenance After 75 Hours (If needed)
1. Remove the Phillips-head screw from clutch housing
2. Spray in All Purpose Silicone Lubricant for several Seconds
3. Rotate Clutches with seed shaft to cover clutch
4. This is dependent on Field Conditions and Air Clutch Engagement cycles
End of Season Maintenance
• Remove air cylinder and phillips screw and rotate clutch downwards
• Use low pressure air to blow out any dust
End of Season Maintenance
Use silicone Rotate shaft Helps free up build
up and protect from oxidation
Reassemble Before beginning
season ~ spray in silocone
General Air Cylinder Maintenance
Oil cylinders at beginning of season
Place one drop of oil in each air cylinder
Activate cylinder Don’t use silicone ~ only oil
– This doesn’t lubricate clutch– WD 40 or similar products
may degrade seal in cylinder
p/n 68358
Complete Air Clutch Cleaning
Disassemble and clean clutch every two to three years or if clutch system becomes contaminated.
Step one is to remove the clutches from the planter so they can be serviced.
Make sure when reassembling planter drive, all lock collars and spacers are mounted correctly.
Remove Sprocket from Clutch
Sprocket Removed from Clutch
Remove Phillips Screw
Remove Clutch Lid
Insert small, flat screwdriver between lid and enclosure. Pry up lid, forcing it to turn counterclockwise and remove from enclosure.
Use Soft Cloth to Clean Internal Components
Clean these components with cleaner (WD40, Silicone, lightweight oil) as long as you reapply with Silicone
Best done after season Less risk of attracting
dirt
Dirty Clutch
Use Soft Cloth to Clean Internal Components
Remove Snap Ring Disassemble Clutch
Remove Slip Hub
Clutch Completely Disassembled
Stop Collar
Drive HubSlip Hub
Spring
Clean All Components With Soft Cloth
Sprocket SpringStop Collar
Cover
Slip hub
Drive Hub
Carefully Reassemble
Reattach Snap Ring
Stop Collar must be oriented same as during disassembly
Ramps go in same direction so they will stop
Place snap ring with smooth surface down
Place Clutch Back in Housing
Replace Cover
Reattach Sprocket
Careful not to crack housing
Torque no more than 15lbs
Air Compressor Maintenance Compressor is moisture- and
splash-resistant, but not waterproof.
Remove dirt build-up from fins. Replace or clean the filter
element on a regular basis.
Remove compressor assembly at the end of the season and keep it in a dry location.
Keep pressure washers away from the air compressor and air intake filter.
Air Filter ReplacementIn Cab Filter New
Applying for Replacement Parts Contact Trimble Agriculture Support for a
replacement air filter assembly PN 86875. Have ready the original P/N 78870 filter
assembly Sales Order number. Warranty is for replacement only.
Air Tank Maintenance
Drain the tank on a regular basis with draincock on bottom of tank.
Drain the tank before winter storage
Always close drain after draining moisture.
Tru Count Recommended Lubricants
See TruCount Air Clutch Maintenance Support Note for more information.
Additional Information
Actual install instructions will help with clutch reinstallation
Questions?
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