AfterMarketNews Auto Care Pro AutoProJobs Auto-Video.com Brake&Frontend BodyShopBusiness Counterman EngineBuilder Fleet Equipment ImportCar Motorcycle & Powersports News Servicio Automotriz Shop Owner Tire Review Tech Shop Tomorrow's Tech Underhood Service

Battery Service and Diagnosis

A good battery with an adequate charge is absolutely essential for reliable cold starting. A weak battery, or one that is rundown, may not deliver enough amps to crank the engine when temperatures plunge and the oil thickens. Cold weather can be hard...

Read more...

Toughest Spark Plug Changes

We have all been there before: scratched arms, busted knuckles and an aching back caused by a difficult spark plug replacement job. If you think they are getting tougher every year, you are right. Every new engine design is putting the plugs deeper...

Read more...

Improving the Head Gaskets, Fasteners Relationship

The relationship between head gaskets and head bolts is an intimate one. The clamping load applied by the head bolts is what allows the head gasket to maintain its seal. For this marriage to last, there has to be constant tension – not too much,...

Read more...

Wheel Bearings: Measurement and Torque

Wheel bearings are either of the ball or tapered roller variety. Front wheel bearing applications are an angular-type ball bearing, which will accept greater thrust loads than a Conrad-type bearing, and will accept a 100 percent load in the radial...

Read more...

Why Alignment Angles Change

An alignment angle doesn’t change randomly. There is a cause-and-effect relationship between external and ­internal forces that can alter the geometry of a vehicle’s suspension. Having the alignment reading for only one angle on one corner is just...

Read more...

Using Recalls, TSBs as Brake Job Tools

You are getting ready to perform a brake job on a vehicle. While checking the torque specifications on the vehicle, you decide to hit the tab with TSBs and recalls. All of a sudden you are staring at a screen of brake recall notices and TSBs for that...

Read more...

Acura: Clunk Noise While Turning

Model: Acura RSX 2005-’06 Symptom: The front suspension makes a ­clunking noise while turning. Probable Cause: The front springs are moving on the spring seats. Corrective Action: Replace both front springs and do a four­-wheel alignment. Diagnosis:...

Read more...

Inside Import Car Collision Warning, Automatic Braking Systems

Anything that moves under its own power also has to stop, so brakes have been a safety feature on cars since day one. Over the years, technical innovations such as antilock brakes (ABS) have ­improved the ability to stop with minimal skidding on...

Read more...

Intermittent Engine Misfire Analysis

Even for an experienced diagnostic technician, ­attempting to diagnose an intermittent misfire ­condition that occurs only under specific driving conditions can be a frustrating exercise. Let’s begin by getting the basics out of the way. As we know,...

Read more...

Analyzing the Cylinder Pressure Waveform from a Running Engine, Part 3

By Vasyl Postolovskyi and Olle Gladso Contributing Writers and Instructors at Riverland Technical and Community College in Albert Lea, MN   In Part 1 of this Maximizing Tools series, we discussed an alternative approach to diagnosing an engine...

Read more...

Mac Tools Is Wrenching for a Cure

In support of Breast Cancer Awareness month, Mac Tools is featuring a variety of Wrenching For A Cure products available for purchase in the Flyer 11 through Nov. 2. Featured pink products include clothing, accessories, flashlights, pint glasses, and...

Read more...

5 Tool Storage Tips

  As a technician, you likely own thousands of dollars worth of tools and equipment, and require tool storage capacity to hold them all, along with carts and accessories to help move those tools around your work area. Here are a few items...

Read more...
Home x-old ACPN Tech Tip: How to Time a Perkins Diesel Engine

Print Print Email Email

This bulletin from Foley Engines can be used to assist you in timing a Perkins diesel 4.108, 4.236, 4.248 and 6.354 engine. Certain measures need to be taken when removing the fuel injection pump as well installing it.

Removal: First, before removing the injection pump make sure you can still see the scribe mark that Perkins put on the engine block.  This can be found on the engine block just under the injection pump flange.  Having a hard time finding this mark? Locate the other scribe mark on the ear of the injection pump (there are three mounting ears; the mark should be on the one facing away from the engine).  If you do not find this scribe mark on the block than make your own using a knife or other sharp object. The two lines or scribe marks should be in line with each other. This will truly save you a huge headache later on when installing the new or remanufactured injection pump.
 
Next, unbolt the three mounting bolts that hold the pump on to the block. If you’re working with the Perkins 4.108 marine, 6.354.0 or 6.354.4 marine or industrial the pump will slide straight back and the removal will take no time at all. If you are working with a later Perkins 4.108 industrial or a 4.107 or 4.108 Westerbeke marine engine one extra step will be necessary (these engines use a Lucas mechanical pump).  See note below if you have one of the later engines mentioned above.
 
Note: If you’re working with one of the above engines; you must remove the inspection cover located on the face of the timing cover. Inside you will find a three bolt hub that connects the injection pump to the drive gear. You must remove the three bolts before you proceed with the removal. One extra thing: stuff a rag in the cavity between the drive gear and the timing cover. It’s easy to drop one of these bolts into the crankcase.  
 
Installation: Once you have your remanufactured pump from you’re ready to install. Locate the splined input shaft on the replacement pump. This splined shaft will have two splines on it which are either Siamese together or in some case one of the splines will be missing. This makes the pump shaft go into the drive hub (mounted on the injection pump drive gear) one way only.
 
Next, once the pump is in hand tighten the three bolts that mount the pump to the engine. Here comes the most important part. The two scribe marks (one on the pump flange, the other on the block) have to be lined up to look like one line (perfectly inline with each other). This times the engine. Finally, tighten the three bolts to lock the pump in position.
 
If you have one the engines in the note located in the removal section: this is the time to re-install the three bolts in the drive hub (make sure you keep that rag in timing cover!).
 
At this point, the pump is back on, the scribe marks are lined up to time the engine and you are ready to put the fuel lines back on and bleed the system.    
 
For more information on how to bleed the fuel system, check out these other tech bulletins from Foley Engines: Tech Tip #29: Bleeding Lucas, Stanadyne and Diesel Kiki Fuel Systems and also Tech Tip #41: Bleeding Perkins, Deutz and Deere Fuel Systems, Part 2.  

–Courtesy of Foley Engines.

Latest articles from our other sites:

Battery Service and Diagnosis

A good battery with an adequate charge is absolutely essential for reliable cold starting. A weak battery, or one that is rundown, may not deliver enough amps to crank the engine when temperatures...More

Chemical Gasketing: Cleaning the Surface

Service technicians can now use chemical gaskets where OEs had originally used formed-in-place or pre-cut gaskets during vehicle assembly. In addition to complying with OE specs, chemical gaskets are...More

Wheel Bearings: Measurement and Torque

Wheel bearings are either of the ball or tapered roller variety. Front wheel bearing applications are an angular-type ball bearing, which will accept greater thrust loads than a Conrad-type bearing,...More

Why Alignment Angles Change

An alignment angle doesn’t change randomly. There is a cause-and-effect relationship between external and ­internal forces that can alter the geometry of a vehicle’s suspension. Having the alignment...More

Acura: Clunk Noise While Turning

Model: Acura RSX 2005-’06 Symptom: The front suspension makes a ­clunking noise while turning. Probable Cause: The front springs are moving on the spring seats. Corrective Action: Replace both...More

Inside Import Car Collision Warning, Automatic Braking Systems

Anything that moves under its own power also has to stop, so brakes have been a safety feature on cars since day one. Over the years, technical innovations such as antilock brakes (ABS) have ­improved...More

New Snap-on Heavy Duty Catalog Offers Array Of Performance-Enhancing Tools And Equipment

The new Snap-on Heavy Duty Catalog showcases some of the most innovative tools and equipment around, including an assortment of hand tools, power tools, shop and tech equipment, tool storage units, mobile...More

Analyzing the Cylinder Pressure Waveform from a Running Engine, Part 3

By Vasyl Postolovskyi and Olle Gladso Contributing Writers and Instructors at Riverland Technical and Community College in Albert Lea, MN   In Part 1 of this Maximizing Tools series, we discussed...More