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Makotosun

Oil pump to engine line replacement

  • Grumman41
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Oil pump to engine line replacement was created by Grumman41

I’ve got a fairly substantial leak where the oil line joins the banjo fitting on top of the oil pump. I was hoping to buy the complete assembly with the line factory crimped to both banjo fittings. It looks like just the crimps are available and the line from other sources.
I don’t think sliding those small bands on a rubber line of unknown OD is going to be successful for me, any input on how best to accomplish this task?
05 May 2023 19:31 #1

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Replied by MarkT on topic Oil pump to engine line replacement

Not sure what you're working on but if it's a Yamaha Enduro (except maybe an early 68) just buy the hose from Yamaha...  and the little spring clamps if you need them.

Nothing is "crimped"
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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05 May 2023 19:55 #2

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  • Gr8uncleal
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Replied by Gr8uncleal on topic Oil pump to engine line replacement

+1 to Mark's reply.

Line will be a fixed length (700mm comes to mind) that you cut as required and the clips are now silver in colour instead of black.
06 May 2023 00:52 #3

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Replied by 1971DT250 on topic Oil pump to engine line replacement

The clips are made of spring steel. To get them on and off you slip a fingernail or small knife under the edge and try to unroll it as you move it. Also you need the correct diameter hose.
The hours spent riding my Enduros is not deducted from my life span.
06 May 2023 04:26 #4

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Replied by RT325 on topic Oil pump to engine line replacement

I'm guessing RT2 looking at previous posts but they're not prone to leaking there.
If the fitting is broken where the line pushes on i'd think that banjo thingy would be common to any yamaha from around that time & not just 360's.
Is it the black line that's got brittle & cracked. I had that on my HT1 at the top end.
Is there enough hose to shorten it a little & warm it up if its gone hard then refit it.
Last edit: 06 May 2023 05:39 by RT325.
06 May 2023 05:36 #5

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  • Grumman41
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Replied by Grumman41 on topic Oil pump to engine line replacement

Yes, RT2. All good info. It’s kinda old and tedious but great idea to possibly cut the end off and use the existing band.
Getting the correct size ID and OD oil line may be hard.
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Last edit: 06 May 2023 06:20 by Grumman41.
06 May 2023 06:20 #6

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Replied by MarkT on topic Oil pump to engine line replacement

Again. YAMAHA SELLS THE CORRECT HOSE. It's not hard to find at all.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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06 May 2023 07:11 #7

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  • Grumman41
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Replied by Grumman41 on topic Oil pump to engine line replacement

I overlooked the oil line, thought it wasn’t available. After disassembly and inspection I see that the banjo fitting is cracked. I did find all of parts and it should be a fairly easy fix. RANT…$68 for a few parts and washers, at least they are available. I do understand this isn't a big market to be servicing.
06 May 2023 11:25 #8

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Replied by Gr8uncleal on topic Oil pump to engine line replacement

Pretty sure you're being overcharged - where did you get quotes for the parts? See link below to price list from CMSNL.

Yamaha RT2 1972 USA OIL PUMP - buy original OIL PUMP spares online (cmsnl.com)
06 May 2023 11:44 #9

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Replied by MarkT on topic Oil pump to engine line replacement

Great job, glad you found the issue! 

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I find it amazing so many parts are available after 50 years! 

I installed a Bosch Tankless Water Heater at my last house.  It came with a 10 year warranty on everything but the core which had a 15 year warranty.  You had to backflush it every year which I did.  At about 5 years, it stopped kicking on when the water flowed.  Bosch tech support was awesome...  with their directions and my multimeter I was able to determine the sensors and safety switches were all good and it was the control box that failed.

Tech confirmed that it was still under warranty BUT that Bosch had discontinued that model so most parts, including the control box I needed, were no longer available!  He said some third-party plumbing supply had made a deal to buy all the parts inventory so all that Bosch had was parts that also fit other models.  I was not happy...  the tech understood and got approval to see if the plumbing supply they sold to had any control boxes.  They had one left and they wanted $300 for it!  Bosch agreed to pay for it and have it shipped to me...  and they did...  there was an invoice in the box charging the part to Bosch with my shipping address.  This all took a few weeks.  Tech said if the part was no longer available, I would have been out of luck.

I also won't buy Chrysler because while they make good products they have (or at least had) a "five year" policy.  After five years, they sold off all discontinued parts to wholesalers.  I had a Dodge Tradesman Van that had heavy duty front suspension.  It had different spindles and rotors than most.  Previous owner let brakes wear too far and rotors were gouged beyond turning.  Rotors were "dealer only".  They searched the US, none.  They send me a letter with the name, address, and phone number of the part wholesaler that bought out the factory inventory.  I contacted them and they had none left.  They said maybe someday the aftermarket would make them.  I had a couple other Chrysler issues like this so no more. 

Yamaha is awesome in comparison!
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
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06 May 2023 12:15 #10

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