Rebuilding the Volvo MD7A, Part II - SailNet Community
 
LinkBack Thread Tools
post #1 of 5 Old 03-29-2019 Thread Starter
Marine World Classifieds
 
Ze'K's Avatar
 
Join Date: Jun 2015
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Rebuilding the Volvo MD7A, Part II

This is the final installment of my Volvo MD7A rebuild write up. I've been starting it up daily for 3 days now so far, plan to keep running her an hour every day just to break her in.
Ze'K is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 03-30-2019
Senior Member
 
Join Date: Sep 2006
Location: Scotland
Posts: 2,413
Thanks: 0
Thanked 13 Times in 13 Posts
Rep Power: 13
 
Re: Rebuilding the Volvo MD7A, Part II

Well done that man !
I have the MD17c.
Just finished a barrel replacement.
Do not let your motor freeze !!!
I did !!!!
Rockter is offline  
post #3 of 5 Old 03-30-2019 Thread Starter
Marine World Classifieds
 
Ze'K's Avatar
 
Join Date: Jun 2015
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Quote:
Originally Posted by Rockter View Post
Well done that man !
I have the MD17c.
Just finished a barrel replacement.
Do not let your motor freeze !!!
I did !!!!
Thank you sir. You are absolutely correct. I realize tho that it's a never ending saga of diligent maintenance and care to keep her running well. It's just the beginning 🙂
Ze'K is offline  
 
post #4 of 5 Old 03-30-2019
Senior Member
 
Join Date: Sep 2006
Location: Scotland
Posts: 2,413
Thanks: 0
Thanked 13 Times in 13 Posts
Rep Power: 13
 
Re: Rebuilding the Volvo MD7A, Part II

With regular oil changes for both engine and gearbox, the motor and gearbox can be very long-lived.
Remember to make all your gear-changes at idle and keep checking the gearbox oil level.
For years, my old gearbox held oil with no problem, then one afternoon the gearbox seal failed and the oil was plastered all over the engine room in a big line of oil splash. It sounded a bit clunky and I checked it.
Keep a final drive gearbox seal or two handy. They are about $6 (not from Volvo !!!). If i remember, it is a 100x120x12 mm seal (ID, OD and thickness).
If the seal leaks, when you fit the new one, knock it in a wee bit further than the old one, otherwise the new seal rides on the same wee rust pits as the previous one and leaks again.
In very cold weather, run a fan heater under the air filters to assist in the first start.
Be careful with scaling of the coolant entry ports in the head. They can scale up given time, then it overheats and scores the pistons. It will not happen in freshwater but can be a problem in the salty tropics.
I opened the removable side panels of the engine compartment so i could keep checking the engine. I run an open engine compartment. It's a bit noisy but I guess an older engine does need constant checking.
.
Rockter

Last edited by Rockter; 03-30-2019 at 02:52 PM.
Rockter is offline  
post #5 of 5 Old 03-30-2019 Thread Starter
Marine World Classifieds
 
Ze'K's Avatar
 
Join Date: Jun 2015
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Quote:
Originally Posted by Rockter View Post
With regular oil changes for both engine and gearbox, the motor and gearbox can be very long-lived.
Remember to make all your gear-changes at idle and keep checking the gearbox oil level.
For years, my old gearbox held oil with no problem, then one afternoon the gearbox seal failed and the oil was plastered all over the engine room in a big line of oil splash. It sounded a bit clunky and I checked it.
Keep a final drive gearbox seal or two handy. They are about $6 (not from Volvo !!!). If i remember, it is a 100x120x12 mm seal (ID, OD and thickness).
If the seal leaks, when you fit the new one, knock it in a wee bit further than the old one, otherwise the new seal rides on the same wee rust pits as the previous one and leaks again.
In very cold weather, run a fan heater under the air filters to assist in the first start.
Be careful with scaling of the coolant entry ports in the head. They can scale up given time, then it overheats and scores the pistons. It will not happen in freshwater but can be a problem in the salty tropics.
I opened the removable side panels of the engine compartment so i could keep checking the engine. I run an open engine compartment. It's a bit noisy but I guess an older engine does need constant checking.
.
Rockter
Thank you for the advice. I already have encountered a failure and the 37 mm plug in the heat exchanger is leaking so it's off to the machine shop. They're fabricating a piece for me. I should be ok after this.
Ze'K is offline  
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Rebuilding the Volvo MD7A Ze'K Gear & Maintenance 13 04-01-2019 04:31 AM
Volvo/Penta MD7A paulinet. Diesel 8 09-12-2014 10:25 AM
Volvo MD7A Alternator jthomas5 Gear & Maintenance 16 12-15-2008 07:45 PM
Volvo MD7A-1977 Neicy Gear & Maintenance 6 11-09-2005 03:07 AM
Volvo MD7A BertV Gear & Maintenance 4 07-14-2003 07:59 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome