PM final part 2

Transmission: Eaton Fuller Super 10 spd

• Oil capacity of 11 liters
• Recommended RoadRanger synthetic SAE 50 spec PS-164 Rev 7
• MSDS for lubricant at http://www.roadranger.com/rr/CustomerSupport/Support/LiteratureCenter/index.htm?litlibtarget=1162919212455
• Oil must be changed every 180,000 miles or three years

Engine: 12.7 L Detroit Series 60

• Recommended oil is 15W-40 CI-4 or CH-4
• Capacity is 40 quarts including filters
• Recommended interval is 15,000 miles
• MSDS at  https://cglapps.chevron.com/msdspds/MSDSPage.aspx
• Recommended coolant is Detroit Diesel Power Cool 
• Part # 23518918
• Capacity is 58 quarts and change interval is 300,000 miles or 2 years

I learned the real cost to not keeping up with preventive maintenance and also the cost to doing the preventive maintenance. I counted 51 fittings on the Peterbuilt. I discoverer quite a bit more wrong with this truck than I anticipated.

PM final part 1

Apparently I've impressed our operations manager! Had a meeting with him a while back and I'm going to start taking over some of the maintenance management. Been busy with school but I'm working on a maintenance plan and inspection checklist. I did an inspection on one of what I thought was one of our better maintained trucks... We've only had this truck a few weeks so what could possibly go wrong? I used the inspection sheet in Heavy Duty Truck Systems.

1999 Freightliner FLD #285
12.7 Detroit 60 series rated at 500hp (We're an LTL company so you're just flying up the hills in this truck)
Eaton 10 spd
Spicer 3.90 rear ends

• Driver's side clearance light on hood
• Passenger side turn signal on hood
• Driver's seat belt not fastened to seat frame
  
• Missing dash screws (Rattles on rough roads)
• Turn signal switch loose (Held on by hose clamp)
• Hood rubbing on cowl 
  
• Loose alternator belt chirps on start up
• Transmission tail shaft is loose (Should have been written up as a vibration)

• Loose yoke on drive line between tandems (Should have been written up as a vibration)
• Both drive axles moving slightly on spring perches (Probably loose u-bolts)

• Cracked welds on cross member underneath cab (First time I've seen them break on a truck with an air ride cab). I need to look into why this truck is breaking here and the others are not.
  
• Oil leak behind oil cooler manifold (Battery died on flashlight so couldn't find where exactly the oil is coming from). Pretty common on Detroits... Surprisingly no leak on the front gear train cover!
  
• Bushings in front driver's side leaf spring worn out
• Clutch is out of adjustment... Not an EZ-adjust either : (
• Clutch throwout bearing is coated in gear oil... Umm, don't know what's going on there but I'm going to keep an eye on that. Truck has a new bell housing and reman transmission so maybe something isn't quite right here.
• Cold idle advance actually works! 

Week: 55

Total: 474

This week I've been learning a lot about multi-tasking. In a rush to finish building the loading dock and I'm taking over some of the maintenance management so I'm working on part stocking, maintenance schedules, etc... and I'm starting to think there's not enough hours in the day. Definitely need to change  some things though. Every brake job is new s-cams and bushings and so far every clutch failure has been the throw out bearing. Also decided that the torch skills are somewhat lacking at Scrap-it... Bought some plate steel from them and spent most of a day with a torch getting them squared up enough that I could use them.

Week: 47
Total: 419

Patrick Spring of '13

My table's project was the hydraulic X-Change system which is an option on Bobcat excavators. I learned how to follow hydraulic schematics through valves. I've been spending a lot of time welding with 6010 and I learned that propylene cutting torches won't cut through powder coat nearly as well as I thought it would.

50 hours this week
372 total

SPQ13 Patrick

This week I learned how to use a hydraulic schematic to "reverse engineer" a system. Tracking a system back through the diagram and service manual greatly helped my understanding of the drawings. I also learned that sometimes you don't end up fixing what you intend to... I pulled a truck in to check the steering because a driver wrote up a clunk in the front end on the DDIR sheet. I had Dan turn the wheel while I watched for something amiss. I happened to glance at the water pump pulley that drives the alternator (Cummins M11) and noticed it vibrating. Shut the truck down and was able to see a shiny spot on the pulley shaft where the movement has been wiping the surface clean. I'll be tearing into that problem tomorrow and the steering clunk is on hold for now. If the bearing on the gear is failing I'll have to tear apart the front gear train to replace it.

Week: 52
Total: 322 hours

SPQ13 Patrick

Had some trouble with an Airco Wasp ii-e welder and narrowed it down to the rheostat. The first video shows the resistance of the 25 ohm rheostat while moving the dial. The second video shows the voltage test after changing the rheostat and replacing the equipment ground wire (The 6" piece of wire had 28 ohm resistance). Sorry the video is upside down. I got the fitting boxes done and the first 10 hydraulic boards

Week: 47
Total: 270

SPQ13 Patrick

Well about 9:30 tonight I was starting to wish that I had a bigger excavator with more lights. I learned how to draw hydraulic symbols for valves and I improved my understanding of closed center and open center systems but I still have more to learn on that topic because I'm still not exactly sure why they work how they do.

40 hours for the week
223 hours for the quarter