Hey guys
So I have finally decided to commit to doing a proper How To video! I don't usually do these videos because they don't tend to perform well on RU-vid unless people are specifically searching for how to do something, which in the case of valves isn't very many people! However the first time I did a set of valves I felt so achieved and I think its a task simple enough for anyone to learn if your willing!
Unfortunately How To videos also tend to bring out all the experts. I have tried to explain this video in the most basic and least complicated way so that someone not mechanically minded might still be able to understand. So I don't always use correct terminology and I have left ALOT out but hoping the video can help someone understand.
I honestly believe in just getting hands on, building a passion through doing! I didn't realise how much I loved mechanical work untill I got hands on. I always encourage you to still have someone qualified or experienced to over look all your work if you are new to working on engines but please don't be scared off thinking you cant do it!
In this video I take you through the basics of the Diesel Engine Cycle, what your valves do and why, I explain basic terminology like "on the rock" that people always mix up. Then I take you back to footage from 2019 of me adjusting the valves on my 1991 1hz which has a bucket and shim type valve arrangement. After that I run you through the FAR simplier method on my 12H-T which has a pushrod valve setup. The 12H-T footage is purely just to show you guys the process and some tips, as these style of valves must be adjusted hot (engine at operating temp)
I hope even if you don't own an older diesel like these that everybody can take something away from this video. If you do please let me know! I am incredibly nervous uploading a video in this style because I know how critical the internet is!
CHAPTERS
Intro 00:00
School is in Session 01:07
Diesel Engine Cycles 01:38
What do Valves do? 02:59
Why a Clearance? 03:57
When do Valves get Adjusted? 05:20
On The Rock 05:50
1HZ Bucket & Shim Adjustment 06:27
1HZ Valve Specs 08:45
Injection Orders 07:42
Shim Formula 11:44
12H-T Valve Adjustment 13:46
12H-T Valve Specs 14:55
TOOLS
1hz Valve Tool
www.ebay.com.au/itm/Valve-Shi...
Shims
www.allfourx4.com.au/?...
INJECTION ORDERS
Common 6 cyl firing/injection order: 1-5-3-6-2-4
Toyota H, HZ firing/injection order: 1-4-2-6-3-5
TERMS
Camshaft: Opens and closes the Intake and Exhaust valves
On The Rock: The valves of a cylinder that are overlapping ie. exhaust valve is closing as the intake valve is opening. Commonly mistaken to mean the rocker arms that are loose however it is the exact opposite. We cannot adjust valves of a cylinder that is "on the rock" because both valves are in motion and hence no gap is present to measure or adjust.
OHV - Overhead Valve. Camshaft is located in the engine block and includes pushrods and rocker arms
OHC - Overhead Camshaft. Where the camshaft is located in the cylinder head and can have bucket and shim style valves or rocker arms.
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#valveadjustment #howto #dieselengine #4x4 #1hz #12ht #tunedieselengine #4x4 #landcruiser #mechanic #valveclearance #valvelash
13 июл 2024
