All the pre-combustion chambers are made with a two piece joint that is furnace brazed together. Even the Cat originals occasionally fail but I'd say you are right about poor quality after market parts or failed quality control on originals. They do live in a pretty abusive environment.
Thanks for the input OM.
Just an update on this...
I refitted with new cat precoms and had the same thing happen again as well as a glow plug blowing out. Pulled the injector pump and accessory drive shaft, borrowed the correct pump timing fixture and re-timed it and solved the problem. Whoever had worked on it previously must have done some guess work on the pump timing. Strangely enough it started ok and sounded fine while running.
That's pretty unique!!! Do you suspect a lean mixture (hi temp) or over fueling? Hear about the occasional failure but not one that eats pre-com chambers and spits out glow plugs.
OM, I can't quite figure it out.
Our channel highlights machines from the earliest Holt and Best track-type tractors, equipment from the start of Caterpillar in 1925, up to units built in the mid-1960s.
Chapter Nineteen
| 34 Henty Hwy, WarracknabealChapter Fifteen
| Placerville, CAChapter Two
| Stradsett, Nr Downham Market. Norfolk PE33 9HA UK
Antique Caterpillar
Machinery Owners Club
1115 Madison St NE # 1117
Salem, OR 97301
Terms & Privacy
Website developed by
AdCo
"I became a member recently because the wealth of knowledge here is priceless."
-Chris R