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We recently purchased a 2001 Serengeti 4706 with a Cummins ISC 350 engine. My concern is with the Pacbrake. It works fine until going down a 6 or 7% grade. It will not hold the speed. I go into the grade in 3rd gear at about 35 MHP but it slowly gains speed. I pump the brakes to slow down 5 to 10 MPH each time trying to maintain the speed between 45 and 50. I can really smell the brakes heating up.
My question should the Pacbrake be able to hold the speed of the motorhome going down a grade of 6 or 7%?
Thanks
Doug
2001 Serengeti 4706
Cummins ISC 350'
Re: Pacbrake question
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wolfe102001
- Posts: 502
- Joined: Sun Feb 17, 2013 6:23 am
Re: Pacbrake question
'In 3rd gear, my answer is YES.
Easy test to see if the exhaust brake is working properly:
On any open stretch of road, down arrow to a gear where RPM's are near the high end of the RPM range.
Toggle the exhaust brake ON, OFF, ON .... You should feel a real difference in braking HP, particularly at those higher RPM.
Let us know what you find.
'
Easy test to see if the exhaust brake is working properly:
On any open stretch of road, down arrow to a gear where RPM's are near the high end of the RPM range.
Toggle the exhaust brake ON, OFF, ON .... You should feel a real difference in braking HP, particularly at those higher RPM.
Let us know what you find.
'
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TJAMES BLAIR
- Posts: 11
- Joined: Sun Apr 21, 2019 9:22 pm
Re: Pacbrake question
' I don't have a pacbreak but the Safari motor coach when I purchased it from a previous owner came with a Wilson engine exhaust brake system. I'm wondering if anyone else has one of these installed in their coach. There are no instructions or repair manual.
Get Outlook for Android
From: Safarifriends@yahoogroups.com on behalf of bawolfe10@... [Safarifriends]
Sent: Sunday, May 26, 2019 7:22:24 PM
To: Safarifriends@yahoogroups.com
Subject: [Safarifriends] Re: Pacbrake question
In 3rd gear, my answer is YES.
Easy test to see if the exhaust brake is working properly:
On any open stretch of road, down arrow to a gear where RPM's are near the high end of the RPM range.
Toggle the exhaust brake ON, OFF, ON .... You should feel a real difference in braking HP, particularly at those higher RPM.
Let us know what you find.
'
Get Outlook for Android
From: Safarifriends@yahoogroups.com on behalf of bawolfe10@... [Safarifriends]
Sent: Sunday, May 26, 2019 7:22:24 PM
To: Safarifriends@yahoogroups.com
Subject: [Safarifriends] Re: Pacbrake question
In 3rd gear, my answer is YES.
Easy test to see if the exhaust brake is working properly:
On any open stretch of road, down arrow to a gear where RPM's are near the high end of the RPM range.
Toggle the exhaust brake ON, OFF, ON .... You should feel a real difference in braking HP, particularly at those higher RPM.
Let us know what you find.
'
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mel96safari
- Posts: 719
- Joined: Thu Mar 19, 2015 7:06 am
Re: Pacbrake question
'??Who, or what, told you that the exhaust brake on your '90 Safari coach is a "Wilson engine exhaust brake system".(That is not something I have heard before).
Mel'96 Sahara
---In Safarifriends@yahoogroups.com, wrote :
I don't have a pacbreak but the Safari motor coach when I purchased it from a previous owner came with a Wilson engine exhaust brake system. I'm wondering if anyone else has one of these installed in their coach. There are no instructions or repair manual.
'
Mel'96 Sahara
---In Safarifriends@yahoogroups.com, wrote :
I don't have a pacbreak but the Safari motor coach when I purchased it from a previous owner came with a Wilson engine exhaust brake system. I'm wondering if anyone else has one of these installed in their coach. There are no instructions or repair manual.
'